Reference for Arakhin 50:35

מנין לשדה שיוצא לכהנים ביובל וגאלה אחד מן הכהנים מנין שלא יאמר

[The following:] Whence do we know that if a field is to go out on Jubilee to the priests and one of the priests redeems it, that he cannot say: Since it would go out to a priest [anyway] and it is in my possession now, let it belong to me, on an argument ad majus: 'If I can acquire title to something belonging to others, how much more to something belonging to myself', therefore the text reads: '[his] possession';<span class="x" onmousemove="('comment',' 'His' is here interpreted as suggesting only that the priest's own field of possession, i.e., that inherited from his father, may belong exclusively to him, but not someone else's field of possession.');">¹⁶</span>

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