"Also on the day of the firstfruits, when you bring a new grain offering to the LORD at your Feast of Weeks, you shall have a holy convocation. You shall do no customary work.
Numbers 28:26
Surrounding context
28:25 And on the seventh day you shall have a holy convocation. You shall do no customary work.
28:26 "Also on the day of the firstfruits, when you bring a new grain offering to the LORD at your Feast of Weeks, you shall have a holy convocation. You shall do no customary work.
28:27 You shall present a burnt offering as a sweet aroma to the LORD: two young bulls, one ram, and seven lambs in their first year,