Unleavened bread is to be eaten for the seven days; nothing leavened is to be seen among you, and no yeast is to be seen anywhere within your borders.
In context
5When Yahweh brings you into the land of the Canaanites, the Hittites, the Amorites, the Hivites, and the Jebusites, which he swore to your fathers to give you, a land flowing with milk and honey, you are to keep this ceremony in this month. 6For seven days you are to eat unleavened bread, and on the seventh day there is to be a feast to Yahweh. 7Unleavened bread is to be eaten for the seven days; nothing leavened is to be seen among you, and no yeast is to be seen anywhere within your borders. 8On that day you are to tell your son, ‘This is because of what Yahweh did for me when I came out of Egypt.’ 9This will be a sign for you on your hand, and a reminder on your forehead, so that the teaching of Yahweh may be on your lips — for Yahweh brought you out of Egypt with a mighty hand.