Exodus 12:20 KJV
Ye shall eat nothing leavened; in all your habitations shall ye eat unleavened bread.
Exodus 12:20, King James Version
In context
19 Seven days shall there be no leaven found in your houses: for whosoever eateth that which is leavened, even that soul shall be cut off from the congregation of Israel, whether he be a stranger, or born in the land.
20 Ye shall eat nothing leavened; in all your habitations shall ye eat unleavened bread.
21 Then Moses called for all the elders of Israel, and said unto them, Draw out and take you a lamb according to your families, and kill the passover.