Numbers 15:19

Overview - Numbers 15
The law of the meat offering, and the drink offering.
14 The stranger is under the same law.
17 The law of the first of the dough for an heave offering.
22 The sacrifice for sins of ignorance.
30 The punishment of presumption.
32 He that violated the sabbath is stoned.
37 The law of fringes.
Treasury of Scripture Knowledge

Numbers 15:19  (King James Version)
Then it shall be, that, when ye eat of the bread of the land, ye shall offer up an heave offering unto the LORD.

The oblation before prescribed seems to have been a general acknowledgment from the people at large; but this was an oblation from every one that reaped a harvest: who was required, previously to tasting it himself, to offer a portion of dough as a heave-offering to the Lord. This is supposed to have been given to the priests in their several cities, and not carried to the tabernacle.
Joshua 5:11 Joshua 5:12