[If] the pesach-offering was confused with [other] offerings, they must all be left to pasture until they develop blemishes, and are sold. Then he should bring this type of offering equivalent in value to the best of them, and he should bring the other type of offering equivalent in value to the best of them, and he must cover the added cost from his own purse.  [If] it was confused with firstborn-offerings —- R' Shimon says: If the group is composed of Kohanim, they may eat (the offerings).

A group that lost its pesach-offering and said to one, “Go out, seek [it], and slaughter [it] for us”; and he went out, found [it], and slaughtered [it]. Meanwhile they bought and slaughtered [another]. If his was slaughtered first, he eats of his and they eat of his with him; if theirs was slaughtered first, they eat of theirs and he eats of his; but if it is not known which of them was slaughtered first, or if both were slaughtered at the same time, [then] he eats of his but they do not eat with him; and theirs must be burned, but they are exempt from observing the second pesach.  [If] he said to them, “If I delay, go and slaughter for me”; [and] he went out, found [it], and slaughtered [it]. Meanwhile they bought and slaughtered [another]. If theirs was slaughtered first, they eat of theirs and he eats with them; if his was slaughtered first, he eats of his and they eat of theirs; but if it is not known which was slaughtered first, or if both were slaugh-tered at the same time, [then] they eat of theirs, but he does not eat with them; and his is burned, but he is exempt from observing the second pesach.  [If] he said to them and they said to him, all [of them] eat of the first. But if it is not known which of them was slaughtered first, both are burned.  [If] he said nothing to them and they said noth-ing to him, they are not responsible for each other.