Reference for Yevamot 92:15

ש"מ תלת ש"מ גר צריך שלשה וש"מ אינו גר עד שימול ויטבול וש"מ אין מטבילין גר בלילה ונימא ש"מ נמי בעינן מומחין דלמא דאיקלעו

Rabbi;<span class="x" onmousemove="('comment',' Was also present. ');">⁴¹</span> and R. Safra taught: R. Oshaia b. Hiyya)<span class="x" onmousemove="('comment',' Was also present. ');">⁴¹</span> — that there came before him a proselyte who had been circumcised but had not performed the ablution.<span class="x" onmousemove="('comment',' Requesting that he be allowed to perform the prescribed ablution, so as to complete his initiation. ');">⁴²</span>

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