Deuteronomy 16:2-8

2Thou shalt therefore sacrifice the passover to the LORD thy God, of the flock and the herd, in the place which the LORD shall choose to place his name there.

3Thou shalt eat no leavened bread with it; seven days shalt thou eat unleavened bread with it, even the bread of affliction; for thou camest forth from the land of Egypt in haste: that thou mayest remember the day when thou camest forth from the land of Egypt all the days of thy life.

4And there shall be no leavened bread seen with thee in all thy land seven days; neither shall there any thing of the flesh, which thou didst sacrifice the first day at evening, remain all night until the morning.

5Thou mayest not sacrifice the passover within any of thy gates, which the LORD thy God giveth thee:1

6But at the place which the LORD thy God shall choose to place his name in, there thou shalt sacrifice the passover at evening, at the setting of the sun, at the time of thy departure from Egypt.

7And thou shalt roast and eat it in the place which the LORD thy God shall choose: and thou shalt return in the morning, and go to thy tents.

8Six days thou shalt eat unleavened bread: and on the seventh day shall be a solemn assembly to the LORD thy God: in it thou shalt do no work.2