Reference for Yevamot 83:9

רבא אמר גזירה שמא ישא את אחותו מאביו וייבם אשת אחיו מאמו

wait three months.<span class="x" onmousemove="('comment',' After their conversion, before resuming connubial relations. ');">¹⁴</span> Now, what distinction is there to be made here? — Here also there is the distinction to be made between seed that was sown in holiness and seed that was not sown in holiness.

Jastrow

Jastrow