Cakradatta (Cikitsasangraha) 33.49

33.49

sevanyāḥ savyapārśve ca yavamātraṃ vimucya tu .
vraṇaṃ kṛtvāśmarīmātraṃ karṣettāṃ śastrakarmavit .. 49 ..

And leaving a space of just a barley-grain to the left side of the perineal raphe, / making an incision the size of the calculus, the expert in surgical procedures should extract it. // 49