Exodus 12:15

For seven days, you shall eat unleavened bread. On the first day there shall be no leaven in your houses. Whoever will consume anything leavened, from the first day, even until the seventh day, that soul shall perish from Israel

Other versions

King James Version

Seven days shall ye eat unleavened bread; even the first day ye shall put away leaven out of your houses: for whosoever eateth leavened bread from the first day until the seventh day, that soul shall be cut off from Israel.

English Standard Version

Seven days you shall eat unleavened bread. On the first day you shall remove leaven out of your houses, for if anyone eats what is leavened, from the first day until the seventh day, that person shall be cut off from Israel.

New International Version

For seven days you are to eat bread made without yeast. On the first day remove the yeast from your houses, for whoever eats anything with yeast in it from the first day through the seventh must be cut off from Israel.