Lord Śrī Kṛṣṇa is situated in everyone’s heart, yet He manifests His transcendental form by His internal potency. This very Lord was sitting before Bhīṣmadeva, and since Bhīṣmadeva knew of His glories, he worshiped Him duly.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
कृष्णं च तत्प्रभावज्ञ आसीनं जगदीश्वरम् । हृदिस्थं पूजयामास माययोपात्तविग्रहम्
kṛṣṇaṃ ca tatprabhāvajña āsīnaṃ jagadīśvaram | hṛdisthaṃ pūjayāmāsa māyayopāttavigraham
SB 1.9.10