Exodus 12:37-39

Young's Literal Translation

³⁷ And the sons of Israel journey from Rameses to Succoth, about six hundred thousand men on foot, apart from infants;

³⁸ and a great rabble also hath gone up with them, and flock and herd -- very much cattle.

³⁹ And they bake with the dough which they have brought out from Egypt unleavened cakes, for it hath not fermented; for they have been cast out of Egypt, and have not been able to delay, and also provision they have not made for themselves.