Śrīmad-Bhāgavatam · Texts 6.4.27-28
Who is speaking and story frame
मनीषिणोऽन्तर्हृदि सन्निवेशितं
स्वशक्तिभिर्नवभिश्च त्रिवृद्भि: ।
वह्निं यथा दारुणि पाञ्चदश्यं
मनीषया निष्कर्षन्ति गूढम् ॥ २७ ॥
स वै ममाशेषविशेषमाया
निषेधनिर्वाणसुखानुभूति: ।
स सर्वनामा स च विश्वरूप:
प्रसीदतामनिरुक्तात्मशक्ति: ॥ २८ ॥
manīṣiṇo ’ntar-hṛdi sanniveśitaṁ
sva-śaktibhir navabhiś ca trivṛdbhiḥ
vahniṁ yathā dāruṇi pāñcadaśyaṁ
manīṣayā niṣkarṣanti gūḍham
sa vai mamāśeṣa-viśeṣa-māyā-
niṣedha-nirvāṇa-sukhānubhūtiḥ
sa sarva-nāmā sa ca viśva-rūpaḥ
prasīdatām aniruktātma-śaktiḥ
Just as great learned brāhmaṇas who are expert in performing ritualistic ceremonies and sacrifices can extract the fire dormant within wooden fuel by chanting the fifteen Sāmidhenī mantras, thus proving the efficacy of the Vedic mantras, so those who are actually advanced in consciousness — in other words, those who are Kṛṣṇa conscious — can find the Supersoul, who by His own spiritual potency is situated within the heart. The heart is covered by the three modes of material nature and the nine material elements [material nature, the total material energy, the ego, the mind and the five objects of sense gratification], and also by the five material elements and the ten senses. These twenty-seven elements constitute the external energy of the Lord. Great yogīs meditate upon the Lord, who is situated as the Supersoul, Paramātmā, within the core of the heart. May that Supersoul be pleased with me. The Supersoul is realized when one is eager for liberation from the unlimited varieties of material life. One actually attains such liberation when he engages in the transcendental loving service of the Lord and realizes the Lord because of his attitude of service. The Lord may be addressed by various spiritual names, which are inconceivable to the material senses. When will that Supreme Personality of Godhead be pleased with me?
Read Śrīla Prabhupāda's purport on Vedabase.io