It was Aibu who reported this and he mentioned four things, one of which was the trampling for tanning. R. Jose b. R. Hanina said: This ‘teaching applies only to the distance ahead of him, but [as for going] back he need not turn back even one mil. R. Aha b. Jacob said: From this [can be inferred that] a distance of one mil he need not turn back, but a distance of less than a mil he must turn back. Our Rabbis taught: If a [Roman] legion which passes from place to place enters a house, the house is unclean, for there is not a legion that does not carry with it several scalps. And be not surprised at this; for R. Ishmael's scalp was placed upon the head of kings. MISHNAH. IF A MAN WAS FLAYING CATTLE OR WILD ANIMALS, CLEAN OR UNCLEAN, SMALL OR LARGE, IN ORDER TO USE THE HIDE FOR A COVERING, [THE HIDE] IS REGARDED AS A CONNECTIVE [WITH THE FLESH] IN RESPECT OF UNCLEANNESS, FOR THE FLESH TO CONTRACT UNCLEANNESS OR CONVEY UNCLEANNESS, UNTIL SO MUCH [OF THE] HIDE HAS BEEN FLAYED AS CAN BE TAKEN HOLD OF; OR IF [IT WAS BEING FLAYED] FOR A WATER-SKIN, UNTIL THE BREAST HAS BEEN FLAYED; OR IF IT WAS BEING FLAYED FROM THE FEET UPWARDS, UNTIL THE WHOLE HIDE [HAS BEEN FLAYED]. AS FOR THE SKIN THAT IS ON THE NECK, R. JOHANAN B. NURI DOES NOT REGARD IT AS A CONNECTIVE, BUT THE SAGES DO REGARD IT AS A CONNECTIVE UNTIL THE WHOLE HIDE HAS BEEN FLAYED. GEMARA. What is the law when more than this [has been flayed]? — Rab said: That which has already been flayed is clean; R. Assi said: The handbreadth nearest to the flesh is unclean. An objection was raised: If a man had flayed this extent, henceforth whosoever touches that which has already been flayed is clean. Presumably [this is so] even [if he touches] the handbreadth nearest to the flesh? — No, except for the handbreadth nearest to the flesh. Come and hear: [Whosoever touches] the skin opposite the flesh is unclean. [That is, presumably whosoever touches] the skin opposite the flesh only is unclean, but [whosoever touches the skin in] the handbreadth nearest to the flesh is clean! — This Tanna expresses the handbreadth nearest to the flesh by the term ‘the skin opposite the flesh’. Come and hear: If a man flayed cattle or wild animals, clean or unclean, small or large, in order to use the hide for a covering, [and he flayed] so much [of the hide] as can be taken hold of, [it does not serve as a connective], and the handbreadth nearest to the flesh is clean! — That refers to the first handbreadth. It was taught: How much is meant by ‘so much as can be taken hold of’? — A handbreadth. But it was taught: Two handbreadths! — Abaye explained (The former Baraitha meant) a double handbreadth. And so it has been expressly taught: How much is ‘so much as can be taken hold of’. A double handbreadth. We have learnt elsewhere: If a man had begun to tear a garment (which was unclean), so soon as the greater part of it is torn the parts can no longer be deemed to be joined and it is clean. R. Nahman said in the name of Rabbah b. Abbuha: This [teaching] applies only to a garment which had been immersed that same day, for since he did not shrink from immersing it, he likewise will not shrink from tearing the greater part of it; but it does not apply to a garment which had not been immersed that same day, for it is to be feared that he will not tear the greater part of it. Thereupon Rabbah said: There are two objections to this argument. In the first place [it certainly cannot apply to a garment which had been immersed that same day], for people might say that immersion during the day is sufficient [to render an article clean]; secondly,ᵃᵇᶜᵈᵉᶠᵍʰⁱʲᵏˡᵐⁿᵒᵖᵠʳˢᵗᵘᵛʷˣ