Reference for Chullin 266:25

אפי' שותף באחת מהן פטור מכולן

There are twenty-four priestly endowments, all bestowed upon Aaron and his sons first in general terms<span class="x" onmousemove="('comment',' Cf. Num. XVIII, 8: All the hallowed things of the children of Israel unto thee have I given them.');">¹²</span>

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