Reference for Bekhorot 119:15

קסבר

R'Nahman B'Isaac said: The mother of R'Huna B'Sehorah was privileged to have a son who explained [Raba's ruling] on [the Sabbath previous to] a Festival<span class="x" onmousemove="('comment',' Where there was a large public present to hear the exposition of the regulations of the forthcoming Festival.');">¹²</span>

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