Deuteronomy 16:4

4 No yeast is to be found anywhere in your territory for seven days, and none of the meat you sacrifice in the evening of the first day is to remain 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 Sacrifice to the Lord your God a Passover animal from the herd or flock in the place where the Lord chooses to have His name dwell.

3 You must not eat leavened bread with it. For seven days you are to eat unleavened bread with it, the bread of hardship-because you left the land of Egypt in a hurry-so that you may remember for the rest of your life the day you left the land of Egypt.

4 No yeast is to be found anywhere in your territory for seven days, and none of the meat you sacrifice in the evening of the first day is to remain until morning.

5 You are not to sacrifice the Passover animal in any of the towns the Lord your God is giving you.

6 You must only sacrifice the Passover animal at the place where the Lord your God chooses to have His name dwell. [Do this] in the evening as the sun sets at the [same] time [of day] you departed from Egypt.