All clothing can become impure from Negaim [diseased patches on skin, clothes, or houses that create impurity] except those of non-Jews. One who buys clothing from a non-Jew should examine it as if in the beginning [of the Nega]. Skins of sea creatures do not become impure from Negaim. If one attached them to [clothing made] from that which grows in the ground, even a thread or even a string or anything which can become impure, is impure.

Wool from camels or wool from sheep which were mixed together: if most of it came from the camel, it does not become impure from Negaim, if most of it came from the sheep, it does become impure from Negaim. If it was half and half, it does become impure from Negaim. And so too with linen and hemp that were mixed together.

Leather and garments that are colored do not become impure from Negaim. Houses, regardless of whether they are colored or not colored, become impure from Negaim, says Rabbi Meir. But Rabbi Yehuda says leather is like houses. Rabbi Shimon says those colored by the hands of Heaven [naturally] become impure, but by human hands do not become impure.

An article of clothing whose warp is colored and its weft is white, or its warp is white and its weft is colored, everything goes according to its appearance. Clothing becomes impure by the deepest green of the green or by the deepest red of the red. If it was deep green and spread as a deep red or a deep red and spread as a deep green, it is impure. If it changed [color] and spread or changed [color] but did not spread, it is as if it did not change. Rabbi Yehuda says, it should be examined as if in the beginning [of the Nega].

That which stands [remains unchanged] after the first week should be washed and quarantined [again]. That which stands after the second week should be burnt. That which spreads in this or that [week] should be burnt. That which was initially faint, Rabbi Yishmael says it should be washed and quarantined but the Sages say he does not need to. That which was faint after the first week should be washed and quarantined. That which was faint after the second week should be torn out and what was torn should be burnt and it requires patching. Rabbi Nechemia says it does not require patching.

If the Nega returned to the clothing, the patch is saved. If it returned to the patch, the [entire article of] clothing is burnt. If [a patch of] quarantined [clothing] was attached to pure [clothing] and the spot returned to the clothing, the patch should be burnt. If it returned to the patch, the first piece of clothing should be burnt and the patch should serve the second piece of clothing as an indicator.

A screen that has colored and white patches, they extend from one into the other. They asked Rabbi Eliezer, "What if there was only one white section?" and he said, "I do not know." Rabbi Yehuda ben Beteira said to him, "Shall I teach in this?" He said to him, "If [your purpose is] to establish the words of the Sages, go on." He said to him, "Maybe it will stand [unchanged] for two weeks, and clothing that stands [unchanged] for two weeks is impure." He said to him, "You are a great Sage because you established the words of the Sages." Connected spreading, any amount [makes it impure] and [spreading over] a distance must be the size of a bean. And a returning [Nega] must be the size of a bean.

The warp and the weft are able to become impure from Negaim immediately. Rabbi Yehuda says, the warp when it is boiled and the weft immediately, and spun threads of linen when they are bleached. How much must be on the coil for it to become impure from Negaim? Enough to weave from it three [fingers] by three [fingers], warp and weft, even if it is all warp or even if it is all weft. If there were splits [in the thread], it does not become impure from Negaim. Rabbi Yehuda says, even if it split once and he tied it [back together], it does not become impure.

When raising [thread] from one coil to another, from one spool to another, or from the upper beam to the lower beam, or similarly two sides of a shirt upon one of which a Nega appears, the second remains pure. [If it appears while still] inside the body of the loom or on warp standing [for weaving], they become impure from Negaim immediately. Rabbi Shimon says, if the warp is close together it does not become impure.

If [the Nega] appears on standing warp, the [already] woven part is still pure. If it appeared in the woven part, the standing warp remains pure. If it appears on a sheet, the fringes must be burnt. If it appears on the fringes, the rest of the sheet remains pure. A shirt upon which appears a Nega saves the trimmings even if they were made of purple wool.

Anything which can become impure from a dead body, even if it is not able to become impure by being sat on, can become impure from Negaim. For instance, the sail of a ship, a curtain, the decorative piece of a hairnet, covers of sefarim [books of the Tanach written in holiness, on parchment, and used for personal or public study, or for reading aloud in public. Sometimes the intent is specifically Torah scrolls], a belt, the laces of a shoe or of a sandal that has the width of a bean, can all become impure from Negaim. A thick wool garment upon which a Nega appeared, Rabbi Eliezer ben Yaakov says it must appear upon both the woven part and the tuft. A flask and a sack are checked as they normally would be and [a Nega] can spread from inside to the outside and from the outside to the inside.

If a quarantined piece of clothing became mixed up in other [clothing], they are all pure. If he shredded it and made it into rags, it is pure and he can derive benefit from it. If a declared [impure] piece of clothing became mixed up with other [clothing], they are all impure. If he shredded it and made it into rags, it is still impure and he is forbidden to derive benefit from it.