Deuteronomy 16:3-5

Names of God Bible

³ Never eat leavened bread with the meat from this sacrifice. Instead, for seven days you must eat unleavened bread at this festival. (It is the bread of misery because you left Egypt in a hurry.) Eat this bread so that, as long as you live, you will remember the day you left Egypt. ⁴ There should be no yeast anywhere in your land for seven days. Never leave until morning any of the meat you slaughter on the evening of the first day.

⁵ You’re not allowed to slaughter the animals for Passover in any of the cities Yahweh your Elohim is giving you.