No leaven is to be found in all your land for seven days, and none of the meat you sacrifice in the evening of the first day shall remain until morning.
Jewish Publication Society of America Version (JPS1917) - Deuteronomy 16:4 >And there shall be no leaven seen with thee in all they borders seven days; neither shall any of the flesh, which thou sacrificest the first day at even, remain all night until the morning.