[If] a patch was sewn onto a basket, it contaminates one and invalidates one. [If] one [then] separated it from the basket, the basket contaminates one and invalidates one, but the patch becomes tahor. [If] it was sewn onto a cloth, it contaminates two and invalidates one. [If] he [then] separated it from the cloth, the cloth contaminates one and invalidates one, but the patch contaminates two and invalidates one. The same applies if one sewed [a patch] onto sack or onto leather; [these are] the words of R’ Meir. R’ Shimon rules that it is tahor. R’ Yose says: [If he sewed the patch] onto leather, it is tahor; onto sack, it is tamei, since it is woven.

[The minimum measure of] three by three [fingerbreadths] that [the Rabbis] stated [regarding cloth] is [for the cloth] without the hem. These are the words of R’ Shimon. But the Sages say: [The minimum measure is] precisely three-by-three fingerbreadths. [If a patch] was sewn onto a garment on one side, it is not [considered] attached; on two sides, one opposite the other, it is [considered] attached. [If] it was sewn [onto the garment] in the shape of [the Greek letter] gamma, R’ Akiva rules that it is tamei, but the Sages rule that it is tahor. R’ Yehudah said: When are these things said? With [regard to] a cloak. But with [regard] to a shirt, [if it is sewn] at the top, it is [considered] attached; but at the bottom it is not [considered] attached.