Vṛṣṇivaṃśa–Anukīrtana (Enumeration of the Vṛṣṇi Lineage) — Questions on Viṣṇu’s Human Descent
नाभिश्चोदर संस्था तु तत्र देवो हुताशनः / मनः प्रजापतिर्ज्ञेयः कफः सोमो विभाव्यते
nābhiścodara saṃsthā tu tatra devo hutāśanaḥ / manaḥ prajāpatirjñeyaḥ kaphaḥ somo vibhāvyate
The navel is set within the belly; there dwells the god Hutāśana (Agni). Manas is to be known as Prajāpati, and kapha is to be contemplated as Soma.