Mahanidhi Madan Gopal Das
The following anecdote shows the inconceivable power of suddha-nama chanted by a pure devotee of Kṛṣṇa: “Once a devotee went to do his chanting where Gaura Kisora dasa Babaji did his in the outhouse of the Rani’s dharmasala. He perceived that the bricks and stones were singing Kṛṣṇa’s name. Seeing that by the power of Babaji’s chanting the name of Kṛṣṇa, consciousness (caitanya) had been infused even into unconscious objects, he left in amazement.” (Prabhupada Sarasvati Thakura p. 52)
An excerpt from the book Art of Chanting.