Not only is the chanter of the mahā-mantra purified, but the heart of anyone who happens to hear the transcendental vibration of Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare is also cleansed. Even the souls embodied in lower animals, insects, trees and other species of life also become purified and prepared to become fully Kṛṣṇa conscious simply by hearing the transcendental vibration. This was explained by Ṭhākura Haridāsa when Caitanya Mahāprabhu inquired from him how living entities lower than human beings can be delivered from material bondage. Haridāsa Ṭhākura said that the chanting of the holy names is so powerful that even if one chants in the remotest parts of the jungle, the trees and animals will advance in Kṛṣṇa consciousness simply by hearing the vibration. This was actually proved by Śrī Caitanya Mahāprabhu Himself when He passed through the forest of Jhārikhaṇḍa. At that time the tigers, snakes, deer and all ...