Exodus 13:7 KJV
Unleavened bread shall be eaten seven days; and there shall no leavened bread be seen with thee, neither shall there be leaven seen with thee in all thy quarters.
Exodus 13:7, King James Version
In context
6 Seven days thou shalt eat unleavened bread, and in the seventh day shall be a feast to the Lord.
7 Unleavened bread shall be eaten seven days; and there shall no leavened bread be seen with thee, neither shall there be leaven seen with thee in all thy quarters.
8 And thou shalt shew thy son in that day, saying, This is done because of that which the Lord did unto me when I came forth out of Egypt.