Numbers 15:2-3

Speak unto the children of Israel, and say unto them, When ye be come into the land of your habitations, which I give unto you, and will make an offering by fire unto the LORD, a burnt offering, or a sacrifice in performing a vow, or in a freewill offering, or in your solemn feasts, to make a sweet savour unto the LORD, of the herd, or of the flock