"It shall not be baked leavened. It is their portion; I have given it to them of My fire offerings "—Leviticus 6:10.
It is forbidden to bake the remainder of the Meal Offerings [i.e., the part of the offering not offered on the altar, to which the priests are entitled] as leaven.
"And the remainder of it, Aaron and his sons shall eat as unleavened bread"—Leviticus 6:9.
The kohanim (priests) are commanded to eat the remainder (i.e. the part that has not been offered on the altar) of the meal offerings.
This mitzvah is restricted to male kohanim.
"You shall inquire after His dwelling and come there. And there you shall bring your burnt offerings"—Deuteronomy 12:5-6.
We are commanded to satisfy all our pledges on the first festival – of the three biblical festivals: Passover, Shavuot and Sukkot – following the undertaking of the pledge.
This includes all pledged sacrifices, monies, as well as the various mandatory gifts for the poor.
"When you vow a vow to G‑d, your G‑d, do not be late in paying it"—Deuteronomy 23:22
It is forbidden to postpone the fulfillment of a sacrificial pledge. One has not transgressed this prohibition until three festivals have passed after the pledge was made.
