Su, Nid., 6, 8.1 tatra kaphād udakekṣuvālikāsurāsikatāśanair lavaṇapiṣṭasāndraśukraphenamehā daśa sādhyā doṣadūṣyāṇāṃ samakriyatvāt pittānnīlaharidrāmlakṣāramañjiṣṭhāśoṇitamehāḥ ṣaḍ yāpyā doṣadūṣyāṇāṃ viṣamakriyatvāt vātāt sarpirvasākṣaudrahastimehāścatvāro 'sādhyatamā mahātyayikatvāt //

Su, Utt., 41, 23.2 vraṇitasya bhavecchoṣaḥ sa cāsādhyatamaḥ smṛtaḥ //

Su, Utt., 47, 78.1 marmābhighātajo 'pyasti sa cāsādhyatamaḥ smṛtaḥ /