bahu janma kare yadi sravana, kirtana
tabu ta’ na paya krsna-pade prema-dhana

“If one is infested with the ten offenses in the chanting of the Hare Krsna maha-mantra, despite his endeavor to chant the holy name for many births, he will not get the love of Godhead which is the ultimate goal of this chanting.”

Srila Prabhupada’s translation of Sri Caitanya-caritamrta Adi-lila 8.16