Shemot 12:37-39

Orthodox Jewish Bible

³⁷ And the Bnei Yisroel journeyed from Rameses towards Sukkot, about 600,000 gevarim on foot, not counting women and children.

³⁸ And an erev rav (mixed multitude, a mixed company that was large) went along also with them; and tzon, and herds, even very many domestic animals.

³⁹ And they baked the batzek (deaf dough) which they brought forth out of Mitzrayim, into round flat cakes of matzot; ki lo chametz, because they were thrust out of Mitzrayim, and could not tarry (linger), neither had they prepared for tzeidah (supply of food, provision).