Reference for Pesachim 14:3

התם היכי נימא נימא למול לא סגיא דלאו איהו מהיל אבי הבן מאי איכא למימר אין הכי נמי

- How [else] should he say [it] there? Shall he say, 'to circumcise' - is it imperative that he should circumcise?<span class="x" onmousemove="('comment',' Lit., 'is there no way that he should not circumcise'? - i.e., the obligation does not rest primarily upon the circumciser, but upon the father, whereas if the former said 'to circumcise', it would imply that it is his personal duty in every case.');">³</span>

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