[If] one is suspected of selling terumah as ordinary produce, we may not purchase from him even water or salt; [these are] the words of R’ Yehudah. R’ Shimon says: Whatever has a connection to terumah and maaser we may not purchase from him.

[One] who is suspected of Sabbatical year [violations] is not suspected of [transgressing the laws of] maaser; one who is suspected of maaser [violations] is not suspected of Sabbatical year [violations]. One who is suspected of both these [violations] is suspected of [transgressing the laws of] tahorah. But in some cases, one who is suspected of tahorah [violations] is not suspected of [violating] this one or of that one. This is the rule: Whoever is suspected of something may neither judge nor testify concerning it.

All disqualified offerings may be sold in the market, slaughtered in the market, and be weighed by the litra, with the exception of the bechor and the maaser offering, because their advantage falls to the owners. [With] disqualified offerings, [however,] their advantage falls to the holy estate. And a portion may be weighed against a portion in the case of the bechor.

Beis Shammai say: A Yisrael may not be invited [to join] with a Kohen in a bechor. Beis Hillel [however] permit [it], and even a non-Jew.  [If] a bechor suffers from a congestion of blood, even if it will die it may not be bled; [these are] the words of R’ Yehudah. The Sages [however] say: He may let [its] blood, provided he does not inflict a blemish upon it; and if he did inflict a blemish upon it, it may not be slaughtered on its account. R’ Shimon says: He may bleed it even though he inflicts a blemish upon it.