When you will chant, you'll hear also. Then your attention will be there. And you are chanting and you are thinking something else, oh, that is also another offense. You should be careful. Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare. If you cannot hear, then you will chant loudly, Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare. So you must hear. That is wanted. Otherwise you will be inattentive. That is offense.

Srila Prabhupada — July 13, 1971, Los Angeles