Terumat hamaaser
In the Hebrew Bible, the tithe of the tithes is a mitzvah for the recipient Levite to give to the priest a tenth of the tithe of produce that the former received from the Israelites. It applies only to agricultural produce grown in the Land of Israel.
This "tithe of the tithes" is a derivative of the tithe offering – a rabbinical Hebrew term based on the commandment in the Hebrew Bible to give a tithe of 10% to the Levites. The first term, terumah, means offering. The term tithe offering,, is alluded to in the Hebrew Bible text under the words "a tithe of the tithe".
Hebrew Bible
The term tithe occurs ten times in the Masoretic Text of the Hebrew Bible, in addition to the term which occurs once only in Nehemiah.This offering is to be distinguished from the "offering tribute" which Moses gave to God in Numbers.
Rabbinical interpretation
The gift of was generally not given by the Israelite directly to the priest. Rather, it was given to a Levite, as the recipient of maaser rishon, and then the Levite gave of ten percent of his gift directly to the kohen. After the edict of Ezra, which directed to be given to the priest, it became the Kohen's responsibility to give one tenth of his gift to another priest of his choice.In the Hebrew Bible, the was regarded as a kind of sacred korban. It could be eaten only by Jewish priests and their families, had to be ritually pure, had to be eaten while in a state of ritual purity, and could not be taken out of the Land of Israel.