JB, 1, 291, 6.0 yathā ha vai kūpasya khātasya gambhīrasya paras tamisram iva dadṛśa evaṃ ha vai śaśvat parastād antarikṣasyāsau lokaḥ //

MBh, 5, 88, 53.1 tasya kṛṣṇa mahābuddher gambhīrasya mahātmanaḥ /

SDhPS, 2, 42.1 tatsādhu bhagavānnirdiśatu yatsaṃghāya tathāgato gambhīrasya tathāgatadharmasya punaḥ punaḥ saṃvarṇanāṃ karoti //