Exodus 23:18
Do not offer the blood of my sacrifice with leavened bread. Do not allow the fat of my feast to remain overnight until morning.
Exodus 34:25
Do not offer the blood of a sacrifice to me at the same time you offer anything containing yeast. No part of the sacrifice at the Passover festival should be left over in the morning.
Leviticus 2:11
Every grain offering you bring to Jehovah must be made without yeast. Do not use yeast or honey in food offered to Jehovah.
Deuteronomy 16:4
No leaven should be seen with you in all your territory for seven days. None of the flesh you sacrifice on the evening of the first day shall remain overnight until morning.
Exodus 12:8
That night the animals are to be roasted and eaten, together with bitter herbs (greens) and unleavened bread made without yeast.
Exodus 12:10
Eat what you want that night, and the next morning burn whatever is left.
Exodus 12:15
You will eat unleavened bread for seven days. The first day you shall remove leaven from your houses. Whoever eats anything leavened from the first day until the seventh day will be cut off from Israel.
Leviticus 7:15
The flesh of the sacrifice of his thanksgiving peace offerings will be eaten on the day of his offering. He should not leave any of it over until morning.
Leviticus 7:12
If you offer it as a thank offering, you must also bring rings of unleavened bread mixed with oil, wafers of unleavened bread brushed with oil, and loaves made from flour mixed well with oil.