Leviticus 10:14

14But the abreast that is waved and the thigh that is contributed you shall eat in a clean place, you and your sons and your daughters with you, for they are given as your due and your sonsdue from the sacrifices of the peace offerings of the people of Israel.

Numbers 18:11-19

11This also is yours: the contribution of their gift, all the bwave offerings of the people of Israel. I have given them to cyou, and to your sons and daughters with you, as a perpetual due. dEveryone who is clean in your house may eat it. 12 eAll the best of the oil and all the best of the wine and of the grain, fthe firstfruits of what they give to the Lord, I give to you. 13The first ripe fruits of all that is in their land, gwhich they bring to the Lord, shall be yours. hEveryone who is clean in your house may eat it. 14 iEvery devoted thing in Israel shall be yours. 15 jEverything that opens the womb of all flesh, whether man or beast, which they offer to the Lord, shall be yours. Nevertheless, kthe firstborn of man you shall redeem, and the firstborn of unclean animals you shall redeem. 16And their redemption price l(at a month old you shall redeem them) you shall fix at five shekels
A  shekel was about 2/5 ounce or 11 grams
in silver, according to the shekel of the sanctuary, nwhich is twenty gerahs.
17 oBut the firstborn of a cow, or the firstborn of a sheep, or the firstborn of a goat, you shall not redeem; they are holy. You shall sprinkle their blood on the altar and shall burn their fat as a food offering, with a pleasing aroma to the Lord. 18But their flesh shall be yours, as pthe breast that is waved and as the right thigh are yours. 19 qAll the holy contributions that the people of Israel present to the Lord I give to you, and to your sons and daughters with you, as a perpetual due. rIt is a covenant of salt forever before the Lord for you and for your offspring with you.”
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