Priests: Revenues of First-Fruits
Source: TTT
Numbers 18:8, 12, 13
Then the LORD said to Aaron, “Behold, I have put you in charge of My offerings. As for all the sacred offerings of the Israelites, I have given them to you and your sons as a portion and a permanent statute. / I give you all the freshest olive oil and all the finest new wine and grain that the Israelites give to the LORD as their firstfruits. / The firstfruits of everything in their land that they bring to the LORD will belong to you. Every ceremonially clean person in your household may eat them.
Deuteronomy 18:4
You are to give them the firstfruits of your grain, new wine, and oil, and the first wool sheared from your flock.