Padma Purana 6.115.24

Padmapurāṇa 6.115.24

ṛṣayaūcuḥ
kathaṃvṛkṣatvamāpannābrahmaviṣṇumaheśvarāḥ
etatkathayasarvajñasaṃśayo'tramahānhinaḥ