Exodus 12:10

12:10 You must leave nothing until morning, but you must burn with fire whatever remains of it until morning.

Exodus 12:43

Participation in the Passover

12:43 The Lord said to Moses and Aaron, “This is the ordinance of the Passover. No foreigner may share in eating it.

Exodus 12:18

12:18 In the first month, from the fourteenth day of the month, in the evening, you will eat bread made without yeast until the twenty-first day of the month in the evening.