These must be removed on Pesah:Babylonian kutah, Medean beer, Idumean vinegar, Egyptian zitom, The dyer’s pulp, cook’s dough, and the scribes’ paste. Rabbi Eliezer says: women’s ornaments too. This is the general rule: whatever is of a species of grain must be removed on Pesah. These are subject to a warning but they do not involve karet.

[With regard to] the dough in the cracks of the kneading trough: if there is as much as an olive in one place, he must remove [it]; but if not, it is nullified through the smallness of its quantity. And it is likewise in the matter of uncleanness: if he objects to it, it makes a break; but if he desires its preservation, it is like the kneading-trough. [With regard to] “deaf” dough, if there is [a dough] similar to it which has become chametz, it is forbidden.

How do they separate hallah on the festival [from dough which is] in [a state of] uncleanness?Rabbi Eliezer says: she should not call it [hallah] until it is baked. Rabbi Judah ben Batera says: she should put [the dough] into cold water. Rabbi Joshua said: this is not the chametz concerning which we are warned with, “It shall not be seen”, and “It shall not be found”. Rather she separates it and leaves it until the evening, and if it ferments it ferments.

Rabban Gamaliel says: three women may knead at the same time and bake in one oven, one after the other. But the sages say: three women may be engaged with the dough at the same time: one kneads, one shapes and one bakes. Rabbi Akiba says: not all women and not all kinds of wood and not all ovens are alike. This is the general principle: if it [the dough] rises, she should slap it with [hands dipped in] cold water.

Si’ur must be burnt, while he who eats it is exempt; sidduk must be burnt, while he who eats it is liable to kareth. What is si'ur? [When there are lines on the surface] like locusts’ horns. Sidduk is when the cracks have intermingled with each other, the words of Rabbi Judah. But the sages say: regarding the one and the other, he who eats it is liable for karet. And what is si'ur? When its surface is blanched, like [the face of] a man whose hair is standing [on end].

If the fourteenth [of Nisan] falls on Shabbat, they remove everything before Shabbat, the words of Rabbi Meir. The sages say: at its [usual] time. Rabbi Eleazar bar Zadok says: terumah before Shabbat, and non-sacred [chametz] at its [usual] time.

He who is on his way to slaughter his Pesah sacrifice or to circumcise his son or to dine at a betrothal feast at the house of his father-in-law, and remembers that he has chametz at home: if he is able to go back, remove [it], and [then] return to his religious duty, he must go back and remove [it]; but if not, he annuls it in his heart. [If he is on his way] to save from an invasion or from a river or from brigands or from a fire or from a collapse [of a building], he annuls it in his heart. [But if] to rest for pleasure, he must return immediately.

Similarly, he who went out of Jerusalem and remembered that he had holy meat with him: If he has passed Scopus, he burns it where he is; but if not, he returns and burns it in front of the Temple with the wood of the [altar] pile. And for what [quantity] must they return? Rabbi Meir says: for both when there is as much as an egg; Rabbi Judah says: for both, when there is as much as an olive; But the sages say: holy meat, when there is as much as an olive and chametz, when there is as much as an egg.