Su, Nid., 2, 5.1 tatra sthūlāntrapratibaddham ardhapañcāṅgulaṃ gudamāhus tasmin valayastisro 'dhyardhāṅgulāntarasambhūtāḥ pravāhaṇī visarjanī saṃvaraṇī ceti caturaṅgulāyatāḥ sarvāstiryagekāṅgulocchritāḥ //