Reference for Niddah 53:12

ל"ד אמרת לן

twenty-three days [after the birth of the latter]. 'You once told us', said R. Joseph to him, 'as late as twenty-four days'. R. Aha son of 'Awira citing R. Johanan<span class="x" onmousemove="('comment',' So BaH. Cur. edd., 'R. Isaac'. ');">¹¹</span>

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