Deuteronomy 16:4

4 No leaven is to be seen with you anywhere in your territory for seven days. None of the meat from your sacrifice on the first day in the evening is to remain all night until morning.

Deuteronomy 16:4 Meaning and Commentary

Deuteronomy 16:4

And there shall be no leavened bread seen with thee in all thy
coasts seven days
For before the passover they were to search diligently every room in the house, and every hole and crevice, that none might remain any where; see ( Exodus 12:15 Exodus 12:19 ) ( 13:7 ) ,

neither shall there be anything of the flesh, which thou sacrificedst
the first day at even, remain all night until the morning;
which may be understood both of the flesh of the passover lamb, as Aben Ezra, according to ( Exodus 12:10 ) and of the flesh of flocks and herds, or of the Chagigah; according to Jarchi this Scripture speaks of the Chagigah of the fourteenth, which was not to remain on the first day of the feast (the fifteenth) until the morning of the second day (the sixteenth).

Deuteronomy 16:4 In-Context

2 You are to sacrifice the Pesach offering from flock and herd to ADONAI your God in the place where ADONAI will choose to have his name live.

3 You are not to eat any hametz with it; for seven days you are to eat with it matzah, the bread of affliction; for you came out of the land of Egypt in haste. Thus you will remember the day you left the land of Egypt as long as you live.

4 No leaven is to be seen with you anywhere in your territory for seven days. None of the meat from your sacrifice on the first day in the evening is to remain all night until morning.

5 You may not sacrifice the Pesach offering in just any of the towns that ADONAI your God is giving you;

6 but at the place where ADONAI your God will choose to have his name live - there is where you are to sacrifice the Pesach offering, in the evening, when the sun sets, at the time of year that you came out of Egypt.