Sourdough of terumah and of kilei hakerem that fell into a dough, [and] there was not in this one sufficient to leaven and there was not in this one sufficient to leaven, [but] they combined and leavened, it is prohibited to non-Kohanim, and permitted to Kohanim. R' Shimon permits [it] to non-Kohanim and to Kohanim.

Vessels that one lubricated with tamei oil and then went back and lubricated them [again] with tahor oil, or that he lubricated with tahor oil and then went back and lubricated them [again] with tamei oil, R' Eliezer says: “After the first one I come.” But the Sages say: After the last one.essels that one lubricated with tamei oil and then went back and lubricated them [again] with tahor oil, or that he lubricated with tahor oil and then went back and lubricated them [again] with tamei oil, R' Eliezer says: “After the first one I come.” But the Sages say: After the last one.