Reference for Gittin 59:10

כולהו כרב לא אמרי במכרי לא קתני כשמואל לא קאמרי במזכה לא קתני כעולא נמי לא אמרי כיחידאה לא מוקמינן

— Rab said: [The Mishnah speaks of] priests and Levites with whom he is familiar.<span class="x" onmousemove="('comment',' Makkire Kehunah, lit., 'acquaintances of priesthood', to whom he is accustomed to give the dues year by year, so that they have a presumptive ownership without having handled the dues; v. B.B. (Sonc. ed.) p. 513, n. 11. ');">⁷</span>

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