Commentary for Kiddushin 57:13
אשכחן מיד לדורות מנלן תנא דבי ר' ישמעאל כל מקום שנאמר צו אינו אלא זירוז מיד ולדורות
And if his father did not circumcise him, Beth din<span class="x" onmousemove="('comment',' V. Glos.');"><sup>20</sup></span> is bound to circumcise him, for it is written: Every male among you shall be circumcised.<span class="x" onmousemove="('comment',' Gen. XVII. 10; this is command in general terms, not particularly to the father, and hence is applied to Beth din.');"><sup>21</sup></span> And if Beth din did not circumcise him, he is bound to circumcise himself, for it is written: And the uncircumcised male who will not circumcise the flesh of his foreskin, that soul shall be cut off.<span class="x" onmousemove="('comment',' Ibid. 14.');"><sup>22</sup></span>