vidharmah para-dharmas ca
abhasa upama chalah
dharma-jño ’dharmavat tyajet
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
There are five branches of irreligion, appropriately known as irreligion [vidharma], religious principles for which one is unfit [para-dharma], pretentious religion [abhasa], analogical religion [upadharma] and cheating religion [chala-dharma]. One who is aware of real religious life must abandon these five as irreligious.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Any religious principles opposed to the principle of surrendering to the lotus feet of the Supreme Personality of Godhead, Krsna, are to be considered religious principles of irregularity or cheating, and one who is actually interested in religion must give them up. One should simply follow the instructions of Krsna and surrender unto Him. To do this, of course, one needs very good intelligence, which may be awakened after many, many births through good association with devotees and the practice of Krsna consciousness. Everything but the principle of religion recommended by Krsna — sarva-dharman parityajya mam ekam saranam vraja — should be given up as irreligion.