[If] he performed melikah with the left hand, or at night, or he slaughtered a non-sacred [bird] inside [the Courtyard], or offerings outside [it] — [these] do not contaminate with tumah via the throat. [If] he performed melikah with a knife, [or] he performed melikah on a non-sacred [bird] inside, [or on] offerings outside, [or on] turtledoves whose time has not arrived, or young pigeons whose time has passed, [or on a bird] whose wing has atrophied, or whose eye was blinded, or whose foot was cut off — [they] contaminate with tumah via the throat. This is the rule: Anything whose disqualification is in the Holy does not contaminate with tumah via the throat; [but] if its disqualification is not in the Holy, it contaminates with tumah via the throat. All disqualified persons who perform melikah, their melikah is not valid, but [the birds] do not contaminate with tumah via the throat.

[If] he performed melikah and it was found to be a tereifah — R’ Meir says: It does not contaminate with tumah via the throat; R’ Yehudah says: It contaminates with tumah via the throat. Said R’ Meir: If the carcass of an animal, which transmits tumah through touching and carrying, [yet] its slaughter rids its tereifah of any tumah, [then] the carcass of a bird, which does not transmit tumah through touching and carrying, does it not follow that its shechitah should surely rid its tereifah of any tumah! [Thus,] just as we find regarding shechitah that it renders permissible for eating, and it [also] rids its tereifah of tumah, so too its melikah, which renders permissible for eating, should [also] rid its tereifah of tumah. R’ Yose says: It suffices that it be like an animal carcass, whose shechitah cleanses it [of tumah], but not its melikah.

[If] any sacrifices became mixed with chatas- offerings that must be left to die, or with an ox that must be stoned — even [if only] one in ten thousand — they must all be left to die.  [If] they became mixed with an ox with which a sin has been committed — either [an ox] that has killed a person according to [the evidence of] one witness, or [the evidence of] the owner, [or] with an animal that has committed an act of bestiality, or an animal on which an act of bestiality has been performed, or with an [animal] designated [for idolatrous sacrifice], or one which has been worshipped; or [it became mixed] with a [harlot’s] payment, or a [dog’s] exchange, or a mixed breed, or a tereifah, or [an animal] born by Caesarean section — they should be left to pasture until they become blemished, [after which] they should be sold, and with the money of the most expensive of them, he should bring the same kind [of offering]. [If] it mixed with unblemished, unconsecrated [animals], the unconsecrated [animals] should be sold to those in need of that kind [of offering].

Offerings [which became mixed] with [other] offerings [of] the same kind should each be offered for whomever [is the owner]. Offerings [which became mixed] with offerings [of] a different kind should be left to pasture until they become blemished, [after which] they should be sold; [then] for the money of the most expensive of them, he must bring one of each kind [of offering], and make up the difference from his own funds. [If] they became mixed with a bechor- or maaser-offering, they should be left to pasture until they become blemished and [then] be eaten as bechor- and maaser-offerings. Any [kind of offering] can become mixed up [with any other kind] except for the chatas offering [with] the asham-offering.