Sweat Is Pure and Tears Are Not

The Hook

The first chapter of these laws ends with an inventory. Nine kinds of fluid come out of a zav, and the Rambam sorts all nine. Three are primary sources of impurity, standing at the top of the entire structure: his saliva, his semen, his urine. Three are derivatives, impure enough to ruin a vessel and not impure enough to reach a person: his tears, the blood from a cut on his hand, and, in the parallel case of a woman, her milk. And three are simply pure. Sweat, pus, and what the body discards. In these three, the Rambam says, the fluids of a zav are exactly like those of a man with nothing wrong with him.

Read that list twice and watch what it does to the intuition you brought with you. The water pouring off a man working in the sun is clean. The water coming out of his eyes when he weeps is not. Blood running down his arm is impure and the pus that forms in that same wound tomorrow is pure. Nothing here tracks how unpleasant a substance is. Three chapters run on that refusal, and by the end they are applying it not to fluids at all but to hours already lived.

Metamme'ey Mishkav uMoshav 1: The Nine Fluids

The chapter opens by naming four people. A zav, a zavah, a woman in the nidah state, a woman after childbirth. Each is a primary source of impurity, the highest rung there is, conveying impurity to vessels by touch, to persons by touch and by being carried, and, most distinctively, to whatever they lie on, sit on or ride on, which becomes a primary source in its own right. The bench is not merely dirtied by the person who sat on it. The bench is promoted. Then the Rambam flattens every distinction inside the category. A minor zavah and a major zavah, a man with two discharges and a man with three. For conveying impurity to others they are identical.

The measures collapse too. The slightest amount of nidah blood, zivah blood or the blood of childbirth conveys impurity, because the tradition reads the verse as making her secretion defile the way she does. Five shades of blood render a woman impure and a green discharge is not among them and is pure. And here is a ruling that should stop anyone. When a child is delivered by Cesarean and uterine blood came out with the child, that blood is a primary source of impurity, because the uterus is a place of impurity for every kind of blood that emerges from it, and yet the woman herself is pure unless the blood came out through the ordinary channel. The same refusal governs when a man becomes a zav at all. His first discharge does not convey impurity by being carried, and any bed he sat on between the first discharge and the second is pure, because he is not a zav until there have been two. A person becomes what he is at a moment nobody can identify until afterward, and every drop before it is retroactively innocent. Hold on to that. The third chapter runs the same movement in reverse.

Which brings the chapter to its inventory, and to a shape the Alter Rebbe would recognize immediately. The Tanya does not divide the world into pure and impure. It divides it into four, three shells that are wholly impure and a fourth, kelipat nogah, that is mixed and can be lifted. The Rambam's nine are doing something structurally identical inside a single body. Three fluids carry the entire weight. Three carry something real that cannot reach a person and will still ruin a vessel. Three carry nothing whatsoever.

Metamme'ey Mishkav uMoshav 2: Twenty-Four Hours in Lukewarm Water

The second chapter opens with a division that changes everything. Uterine blood conveys impurity whether it is moist or dry. The discharge of a zav, and his saliva and his semen, convey impurity only while moist, and if they have dried out entirely they convey nothing. And then the Rambam gives the test for dryness, and it is one of the most beautiful measurements in the Mishneh Torah. Soak the substance in lukewarm water for twenty four hours. If it would return to its natural state, it conveys impurity as though it were still moist. If it would not return, it counts as dried out. All of this, he says, is received tradition, which is his way of saying that nobody derived it and nobody is going to argue it away.

Look at what the test measures. Not whether the substance is currently active, not how much of it there is, not what it looks like. The question is whether it retains the capacity to become itself again. A thing counts as what it was for exactly as long as water would bring it back. That is the grammar the Alter Rebbe leans on in the Tanya, where the divine soul is a portion of God above, never severed and only ever obscured, so that a life spent far away is a matter of drying rather than of death. Do not ask what it looks like. Ask what soaking would do.

Then the chapter turns domestic and the rulings get small and sharp. Flax spun by a woman in the nidah state: one who moves it is pure, though she handled it for hours. But if it is still moist it conveys impurity, because of the saliva from her mouth, since a spinner wets the thread at her lips. The flax is innocent and the saliva is riding on it. A zav puts his mouth to a cup and thinks better of it and does not drink, and one who moves the cup is pure. If he swallowed the least amount, one who moves it is impure. He bites into bread or an onion and the one who moves them is pure. He bites into a zucchini or a cucumber and the one who moves them is impure, because those are wet enough that the moisture of his mouth mixes in and stays. The difference between a clean loaf and an unclean cucumber is nothing but water content.

The chapter ends on the decree concerning gentiles, where the Rambam explains not only the rule but the engineering. The Sages decreed that gentiles convey impurity like zavim, and then left a hole in their own decree, declining to extend it to the semen of a gentile, which stays pure, so that everyone would know the decree was Rabbinic and would not burn terumah on its account. They built a visible flaw into the wall so nobody would mistake it for bedrock.

Metamme'ey Mishkav uMoshav 3: The Hours You Have Already Lived

The third chapter begins with a man who was intimate with a woman in the nidah state. He becomes a primary source of impurity like her. And then the Rambam pulls one thing back. The surface he lies on is not what the surface she lies on is. Hers is a primary source. His is only a derivative, which defiles food and drink and cannot reach a person or a vessel. The reason he gives is the most instructive sentence in the chapter. Scripture says her nidah impurity shall be upon him and he shall be impure seven days, and then adds that any bed on which he lies shall be impure. But if her impurity is already upon him, the second clause tells us nothing. Why say it. The Oral Tradition answers that the clause exists to take his bed out of the severe category and put it into the lesser one. A verse that every ear hears as emphasis turns out to be a reduction. The Torah repeated itself in order to lower him.

Then the chapter opens the dimension that makes it unforgettable. A woman with no fixed pattern inspects herself in the morning and is pure, inspects again at noon and finds blood, and everything pure she touched between the two inspections is impure retroactively. If the inspections are days apart, the reach back is twenty four hours. And then the relief, which does not come from piety but from having a pattern. A woman with a fixed time who finds blood at her fixed time is impure only from that moment forward, with no reach backward at all. But if her fixed time arrived and she did not inspect, and she inspects days later and finds blood, she is impure retroactively from the fixed time itself, on the assumption that her body did what it always does.

The law then bends further, around the individual body. Women with a fixed time have physical signs at its onset, yawning, sneezing, a heaviness low in the body, trembling, a weight in the head and the limbs. Some bleed the moment the sign begins and some only at the end of it, and for the first kind everything touched during that span is impure while for the second kind it is pure. The category is not a woman. It is this woman.

And then, having built the most far reaching architecture of suspicion in the order, the Rambam takes almost all of it back. The fetus that put out a hand, the twenty four hours, the fixed time, the stains: all of these are Rabbinic decrees instituted because of doubt, and terumah and sacrificial food are not burned on their account. The ruling is held in abeyance. Not resolved, not dismissed, not acted on. Suspended. The system will reach into your yesterday and then refuse to destroy anything on the strength of what it finds there.

The Unifying Principle

Nothing across these three chapters is decided by the substance. Sweat and tears are salt water off the same body and one is pure and one is not. Blood dissolved in water is pure the instant it stops looking like blood, and the same blood dried to a black crust on a blanket is as impure as it was when it was warm. A cup a zav lifted to his lips and set down is clean, and one swallow later it is not.

What the Rambam is asking, every single time, is whether the thing is still connected to the source that gave it its status, and connection here has almost nothing to do with proximity. Sweat carries nothing though it soaks the shirt. Tears come from closer in and still cannot reach a person. Saliva carries the full weight. The dried discharge counts if soaking would bring it back to itself, and uterine blood needs no test because it never stops being what it is. The third chapter says the same thing in the dimension of time. Impurity found at noon reaches back to the morning, and not because anything happened in the morning. It reaches back because the morning was never closed. A woman who inspected herself has sealed those hours and nothing found later can reopen them. The reach backward is no verdict on the past. It is what happens to any stretch of time that nobody closed.

Modern Application

These chapters fall on the twenty first of Elul, nine days out from Rosh Hashanah, in the last full week of the accounting. The instinctive way to conduct an accounting is by substance. Line the deeds up, sort them into good and bad, weigh the piles. These chapters propose two better questions. The first is the inventory. Not everything that came out of you carries your status. Some of what a hard year produced is sweat, the byproduct of effort, and it soaks everything and means nothing. Some of it is tears, which come from closer in and still cannot reach another person, though they will mark the furniture. And some is saliva, which carries the entire weight of whatever you are. The Baal Shem Tov taught that a person is wherever his will is, and the sorting follows from that. The question about anything you produced this year is not how bad it looked but how close to your will it came.

The second question is the soak test. It is very easy to look at something you have not done in eight months and call it finished because it is dry. The Rambam will not accept dryness as evidence. Twenty four hours in lukewarm water, and if it would come back to its natural state, it never stopped being what it was. That measurement is brutal on complacency and enormously generous in the other direction, which is the point of it. It is the same logic that lets the Rambam rule in Hilchot Teshuvah that repentance out of love turns deliberate sins into merits, a teaching the Chassidic masters never stopped turning over, because it means the past is not fixed. Whatever can come back can come back in either direction.

The Closing

One more mercy is hidden in the structure and it is the one that gets missed. The woman with a fixed time is spared the reach backward not because she is more careful than her neighbor but because her body is legible. Her pattern is known, so the law has something to rely on, and reliance is what makes the past safe. The whole apparatus of retroactive suspicion exists only where there is nothing to go on. Which means the work of these chapters is not to make yourself cleaner. It is to make yourself knowable, to yourself first, including which kind you are, the one who gives way at the start of the expected hour or the one who holds until the end. The Rambam wrote both into the law and asked neither to become the other.

Sort what this year produced into its three grades before you condemn all of it, because most of what soaked your shirt was sweat and it was always clean. Ask of the part that is genuinely yours the only question the Rambam thinks is worth asking, which is not whether it has dried out but whether it would come back if it were soaked. And then close the hours behind you tonight, the way a woman closes them with an inspection, so that whatever gets found in the morning cannot reach back and take them.