Numbers 18:26
Unto the Levites, therefore shalt thou speak and shalt say unto them, When ye shall take of the sons of Israel the tenth which I have given unto you from them as your inheritance, then shall ye offer up therefrom the heave-offering of Yahweh, a tenth of the tenth.
Nehemiah 10:38
And the priest the son of Aaron should be with the Levites, when the Levites should take the tithes, - and the Levites, should bring up the tithe of the tithe, unto the house of our God, into the chambers pertaining unto the treasure-house.
Numbers 18:21
And unto the sons of Levi, lo! I have given all the tenth in Israel for an inheritance, - the allotted portion for their laborious work which, they are performing, the laborious work of the tent of meeting: