A bona fide spiritual master chants the holy names Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare / Hare Rama, Hare Rama, Rama Rama, Hare Hare, and the transcendental sound vibration enters the ear of the disciple, and if the disciple follows in the footsteps of his spiritual master and chants the holy name with equal respect, this chanting constitutes worship of the transcendental name. When the transcendental name is worshiped by the devotee, the name Himself spreads His glories within the heart of the devotee. When the devotee is perfectly qualified in chanting the transcendental vibration of the holy name, he is quite fit to become a spiritual master and to deliver all the people of the world.

Srila Prabhupada, Teachings of Lord Caitanya ch. 18