Deuteronomy 18:6-8

18:6 Suppose a Levite comes by his own free will from one of your villages, from any part of Israel where he is living, to the place the Lord chooses 18:7 and serves in the name of the Lord his God like his fellow Levites who stand there before the Lord. 18:8 He must eat the same share they do, despite any profits he may gain from the sale of his family’s inheritance.