Shabbat

— He deduces it from, or raiment.  For it was taught:  'raiment': I only know [it] of raiment,  how do I know [it of] three [handbreadths] square of other materials?  Therefore it is stated, 'or raiment.' And Abaye? how does he employ this or raiment! — He utilizes it to include three [fingerbreadths] square of wool or linen, that it becomes unclean through creeping things.  And Raba? — The Merciful One revealed this in reference to leprosy,  and the same holds good of reptiles. And Abaye?  — It [the analogy] may be refuted: as for leprosy, [the reason is] because the warp and the woof [of wool or linen] become defiled n their case.  And the other? — Should you think that leprosy is stricter, let the Divine Law write [it]  with reference to reptiles,  and leprosy would be learnt from them. And the other? — Leprosy could not be derived from reptiles, because it may be refuted: as for reptiles, [the reason is] because they defile by the size of a lentil. Abaye said: This Tanna of the School of R. Ishmael rebuts another Tanna of the School of R. Ishmael. For the School of R. Ishmael taught: 'A garment': I know it only of a woollen or a linen garment: whence do I know to include camel hair,  rabbit wool, goat hair,  silk, kallak,  and seritim?  From the verse, or raiment'. Raba said: When does this Tanna of the School of R. Ishmael reject [the defilement of] other materials? [Only in respect of] three [fingerbreadths] square; but [if it is] three [handbreadths] square, be accepts it. But it was Raba who said that in respect of three [handbreadths] by three in other clothes, R. Simeon b. Eleazar accepts [their liability to defilement], while the Tanna of the School of R. Ishmael rejects it? — Raba retracted from that [view]. Alternatively, this latter [statement] was made by R. Papa. R. Papa said: 'So all [are of wool or flax],  is to include kil'ayim.  But of kil'ayim it is explicitly stated, Thou shalt not wear a mingled stuff, wool and linen together? — I might argue, That is only in the manner of wearing,  but to place it over oneself  any two materials [mingled] are forbidden. Now, does that not follow a fortiori': if of wearing, though the whole body derives benefit from kil'ayim,  you say, wool and linen alone [are forbidden] but nothing else; how much more so wrapping oneself! Hence this [dictum] of R. Papa is a fiction.  R. Nahman b. Isaac said: 'So all etc.'