SB 11.15.19

mayy ākāśātmani prāṇe
 manasā ghoṣam udvahan
tatropalabdhā bhūtānāṁ
 haṁso vācaḥ śṛṇoty asau
Synonyms: 
mayi — in Me; ākāśa-ātmani — in the personification of the sky; prāṇe — in the life air; manasā — with the mind; ghoṣam — the transcendental sound; udvahan — concentrating on; tatra — there in the sky; upalabdhāḥ — perceived; bhūtānām — of all living entities; haṁsaḥ — the purified living entity; vācaḥ — words or speaking; śṛṇoti — hears; asau — he.
Translation: 
That purified living entity who fixes his mind on the extraordinary sound vibrations occurring within Me as the personified sky and total life air is then able to perceive within the sky the speaking of all living entities.
Purport: 

Speech occurs by vibrating air within the sky. One who meditates on the Supreme Lord as the personified sky and air thereby acquires the ability to hear that which is vibrated at great distance. The word prāṇa indicates that the Lord is the personified life air of the individual living entities and for the total aggregate of life forms. Ultimately, the pure devotees meditate on the supreme vibration — Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare — and are thus able to hear the speech originating from liberated living entities far beyond the material universe. Any living entity can hear such discussions by reading Śrīmad-Bhāgavatam, Bhagavad-gītā and other such literatures. One who has properly understood the opulences of the Supreme Personality of Godhead finds all perfection, mystic and otherwise, in Kṛṣṇa consciousness.