The Dough Offering ("Challah")

"You shall offer up a cake of the first of your dough as a gift"Numbers 15:20.

We are commanded to separate a portion of every dough we prepare and give it to the priest.

The Priestly Portion of Meat

"And this shall be the priests' due from the people, from those who perform a slaughter, be it an ox or a sheep"—Deuteronomy 18:3.

We are commanded to give to the priest the foreleg, jaw, and belly of any kosher animal that we slaughter.

The Priestly Portion of Fleece

"The first of the fleece of your sheep [shearing], you shall give him"Deuteronomy 18:4.

We are commanded to separate the first portion of [a sheep's] shearing and give it to the priest.

This mitzvah applies only in the Land of Israel.