Deuteronomy 16:2-8

ISV(i) 2 Then sacrifice sheep and cattle for the Passover to the LORD your God at the place where the LORD your God will choose to establish his name. 3 You must not eat any yeast with it. Instead, for seven days eat bread without yeast—the bread of affliction—because you left the land of Egypt in haste. Remember the day you went out of the land of Egypt for the rest of your lives. 4 Yeast is not to be seen in any of your territories for seven days. The meat is not to remain from the evening of the first day until morning.
5 “You must not sacrifice the Passover in just any of your cities that the LORD your God is about to give you. 6 But at the place where your God will choose to establish his name, you are to sacrifice the Passover in the evening at dusk, at the time of day you left Egypt. 7 Boil and eat the Passover meal at the place that the LORD your God will choose. In the morning you may go back to your tents. 8 Eat bread without yeast for six days. Then on the seventh day, hold an assembly to the LORD your God. Don’t do any work.”