Deuteronomy 16:4
No yeast is to be found anywhere in your territory for seven days, and none of the meat you sacrifice in the evening of the first day is to remain until morning.
Exodus 12:10
Do not let any of it remain until morning;
Exodus 34:25
“Do not present
Exodus 13:7
Unleavened bread is to be eaten for those seven days. Nothing leavened may be found among you, and no yeast may be found among you in all your territory.
Exodus 12:15
You must eat unleavened bread for seven days. On the first day you must remove yeast
Exodus 12:8
They are to eat the meat that night; they should eat it, roasted over the fire along with unleavened bread and bitter herbs.