Leviticus 23:9-12

The LORD said to Moses, “Tell the people of Israel: ‘You will enter the land I will give you and gather its harvest. At that time you must bring the first bundle of grain from your harvest to the priest. The priest will present the bundle before the LORD, and it will be accepted for you; he will present the bundle on the day after the Sabbath. “ ‘On the day when you present the bundle of grain, offer a male lamb, one year old, that has nothing wrong with it, as a burnt offering to the LORD.