Deuteronomy 18:1-3 New International Version - UK (NIVUK)
Offerings for priests and Levites
18 The Levitical priests – indeed, the whole tribe of Levi – are to have no land allotted to them or any inheritance with Israel. They shall live on the food offerings presented to the Lord, for that is their inheritance. 2 They shall have no inheritance among their fellow Israelites; the Lord is their inheritance, as he promised them.
3 This is the share due to the priests from the people who sacrifice a bull or a sheep: the shoulder, the internal organs and the meat from the head.