Agnipurana 116.16

116.16

vasiṣṭheśannamaskṛtya tadagre piṇḍado bhavet /
gayānābhau suṣumṇāyāṃ mahākoṣṭyāñca piṇḍadaḥ //

Having bowed to Vasiṣṭheśa, one should offer a funerary ball before him; / one should offer a funerary ball at the navel of Gayā, at Suṣumṇā, and at the Mahākoṣṭhī;