It is the Personality of Godhead Śrī Kṛṣṇa who gives liberation. By thinking of His lotus feet at every second, following in the footsteps of authorities, the devotee in trance can see the Absolute Truth. The learned mental speculators, however, think of Him according to their whims. May the Lord be pleased with me.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यदङ्घ्र्यभिध्यानसमाधिधौतया धियानुपश्यन्ति हि तत्त्वमात्मनः । वदन्ति चैतत्कवयो यथारुचं स मे मुकुन्दो भगवान् प्रसीदताम्
yadaṅghryabhidhyānasamādhidhautayā dhiyānupaśyanti hi tattvamātmanaḥ | vadanti caitatkavayo yathārucaṃ sa me mukundo bhagavān prasīdatām
SB 2.4.21