Su, Sū., 21, 1.1 athāto vraṇapraśnam adhyāyaṃ vyākhyāsyāmaḥ //

Su, Cik., 1, 5.1 doṣopaplavaviśeṣaḥ punaḥ samāsataḥ pañcadaśaprakāraḥ prasaraṇasāmarthyāt yathokto vraṇapraśnādhikāre śuddhatvāt ṣoḍaśaprakāra ityeke //