Deuteronomy 15:20
"Thou shalt eat it before the LORD thy God year by year in the place which the LORD shall choose, thou and thy household."
Cross References (ranked by relevance)
Deuteronomy 14:23
And thou shalt eat before the LORD thy God, in the place which he shall choose to place his name there, the tithe of thy corn, of thy wine, and of thine oil, and the firstlings of thy herds and of thy flocks; that thou mayest learn to fear the LORD thy God always.
Deuteronomy 12:17
Thou mayest not eat within thy gates the tithe of thy corn, or of thy wine, or of thy oil, or the firstlings of thy herds or of thy flock, nor any of thy vows which thou vowest, nor thy freewill offerings, or heave offering of thine hand: