yada graha-grasta iva kvacid dhasaty
akrandate dhyayati vandate janam
muhuh svasan vakti hare jagat-pate
narayanety atma-matir gata-trapah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When a devotee becomes like a person haunted by a ghost, he laughs and very loudly chants about the qualities of the Lord. Sometimes he sits to perform meditation, and he offers respects to every living entity, considering him a devotee of the Lord. Constantly breathing very heavily, he becomes careless of social etiquette and loudly chants like a madman, “Hare Krsna, Hare Krsna! O my Lord, O master of the universe!”
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When one chants the holy name of the Lord in ecstasy, not caring for outward social conventions, it is to be understood that he is atma-mati. In other words, his consciousness is turned toward the Supreme Personality of Godhead.