SB 6.2.27
dhin mam vigarhitam sadbhir
duskrtam kula-kajjalam
hitva balam satim yo ’ham
sura-pim asatim agam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Alas, all condemnation upon me! I acted so sinfully that I degraded my family tradition. Indeed, I gave up my chaste and beautiful young wife to have sexual intercourse with a fallen prostitute accustomed to drinking wine. All condemnation upon me!
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
This is the mentality of one who is becoming a pure devotee. When one is elevated to the platform of devotional service by the grace of the Lord and the spiritual master, one first regrets his past sinful activities. This helps one advance in spiritual life. The Visnudutas had given Ajamila the chance to become a pure devotee, and the duty of a pure devotee is to regret his past sinful activities in illicit sex, intoxication, meat-eating and gambling. Not only should one give up his past bad habits, but he must always regret his past sinful acts. This is the standard of pure devotion.