In a Boraitha we have learned: Rabbi has said: My Master, R. Jacob, has taught me this difference of opinion of R. Elazar and R. Simeon in our Mishna is only in relation to the legs offered by lepers.
R. Johanan said: The trespass-offering of a leper, if slaughtered for a wrong purpose, is where the same difference of opinion of our Mishna exists. According to R. Meir, who says that if he has made a mistake, he must begin anew, he must in this case also bring another trespass-offering. But according to R. Elazar and R. Simeon, who say that he must begin where he had made the mistake, there is no mending of this mistake; for it has been slaughtered already (and if he should slaughter another, he will offer two, while it is written one), The following Boraitha is according to R. Johanan: If a leper's trespass-offering has been slaughtered for another purpose, or some of its blood was not put on the thumbs and great toes of the leper, it may be offered on the altar, and requires a drink-offering; but another trespass-offering has to be offered.
The rabbis taught: All things mentioned in our Mishna—bullocks, he-goats—that have become invalid, defile the garments of him who burns them, and they must be burned in the place where the real sacrifices are burned. [See Lev. xvi. 27, 28.] So is the decree of R. Eliezer and R. Simeon. The sages, however, say: They are not to be burned, because only those which have been used the last, because used for the atonement, must be burned there. Rabha asked R. Na'hman: (If the he-goats have become invalid, two others are required) how many shall he despatch as scapegoats? R. Na'hman answered him: Shall he send a whole flock? R. Papi says in the name of Rabha: He sends the first. R. Simi says in the name of the same: The last. It is right according to R. Simi, because the other of the couple has been used for the atonement; but what is the reason of Rabha, according to R. Papi's saying? He holds as R. Jose of the following Boraitha: If one separates his Paschal lamb and the same be lost, and after he purchases another one in its stead the first one is found, he may offer either one of them. So is the decree of the sages. R. Jose, however, says: There is a merit to offer the first one, unless the second was a better one.
