So persons who are trying to commit sinful activities on the strength of some spiritual activity, they're the greatest sinners. Nāmno balād yasya hi pāpa-buddhiḥ. That is not allowed. You can neutralize your sinful activities by some spiritual a... But that does not mean... This is called hasti-snāna. That is also explained. Hasti-snāna. Hasti-snāna means bathing of the elephant.
The elephant goes into the reservoir of water, takes bath very nicely, and, as soon as come on the land, again takes some dust and throws over the body. Immediately. You see? So, that sort of purification is not required. Once purified, don't commit again. The harer nāma [Cc. Adi 17.21], Hare Kṛṣṇa mantra has got power to purify, but that does not mean that we shall commit again and purify it. That process is not this Hare Kṛṣṇa mantra.
[Srimad Bhagvatam: 1.5.11 - New Vṛndāvana 10 June 1969]