blood

Exodus 12:8, 15
They are to eat the meat that night, roasted over the fire, along with unleavened bread and bitter herbs. . . .

Exodus 34:25
Do not offer the blood of My sacrifice along with anything leavened, and do not let any of the sacrifice from the Passover Feast remain until morning.

Leviticus 2:11
No grain offering that you present to the LORD may be made with yeast, for you are not to burn any yeast or honey as an offering made by fire to the LORD.

Leviticus 7:12
If he offers it as a thanksgiving, then along with the sacrifice of thanksgiving, he must offer unleavened cakes mixed with olive oil, unleavened wafers coated with oil, and well-kneaded cakes of fine flour mixed with oil.

Deuteronomy 16:4
No yeast 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.

Exodus 12:10
Do not leave any of it until morning; before the morning you must burn up any part that is left over.

Leviticus 7:15
The meat of the sacrifice of his thanksgiving peace offering must be eaten on the day he offers it; none of it may be left until morning.