Vṛṣṇivaṃśa–Anukīrtana (Enumeration of the Vṛṣṇi Lineage) — Questions on Viṣṇu’s Human Descent
कफस्य त्दृदयं स्थानं नाभ्यां पित्तं प्रतिष्ठितम् / देहस्य मध्ये त्दृदयं स्थानं तु मनसः स्मृतम्
kaphasya tdṛdayaṃ sthānaṃ nābhyāṃ pittaṃ pratiṣṭhitam / dehasya madhye tdṛdayaṃ sthānaṃ tu manasaḥ smṛtam
The seat of kapha is the heart, and at the navel pitta is established. The heart in the body’s midst is also remembered as the abode of manas (mind).