Reference for Yevamot 92:7
מאן חכמים רבי יוסי
'R. Jose'. For it was taught: If [a proselyte] came and stated, 'I have been circumcised but have not performed ritual ablution' he is 'permitted to perform the ablution<span class="x" onmousemove="('comment',' And by this act alone he is admitted as a proper proselyte. ');"><sup>19</sup></span> and [the proper performance of the previous circumcision] does not matter;<span class="x" onmousemove="('comment',' Lit., 'and what is there in it'. Whether the circumcision had been valid, having been performed for the specific ritual purpose of the proselyte's initiation into Judaism, or whether it had been invalid because it was carried out as a mere surgical operation or as a non-Jewish sectarian rite, is of no consequence, since the present performance of the ritual ablution is alone sufficient for the initiation. ');"><sup>20</sup></span> so R. Judah.