Deuteronomy 16:4
And there shall be no leavened bread seen with thee in all thy borders 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.And there shall be no leavened bread seen with thee in all thy borders 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.