Leviticus 23:7
6. And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.7. In the first day ye shall have an holy convocation: ye shall do no servile work therein.8. But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.
Leviticus თავი 23