Deuteronomy 16:4

Overview - Deuteronomy 16
1	The feast of the passover,
9	of weeks,
13	of tabernacles.
16	Every male must offer, as he is able, at these three feasts.
18	Of judges and justice.
21	Groves and images are forbidden.

Deuteronomy 16:4  (King James Version)
And there shall be no leavened bread seen with thee in all thy coast seven days; neither shall there any thing of the flesh, which thou sacrificedst the first day at even, remain all night until the morning.