The Great Epic of the Bhārata dynasty 7.202.76

Vulgate (Nīlakaṇṭha's text) 7.202.76

kṛtvoṅkāraṃ pratodaṃ ca brahmāṇaṃ caiva sārathim |
gāṇḍīvaṃ mandaraṃ kṛtvā guṇaṃ kṛtvā tu vāsukim ||