Srimad-Bhagavatam: Canto 7 - Chapter 1 - Verse 12

Sanskrit:

विधर्म: परधर्मश्च आभास उपमा छल: ।अधर्मशाखा: पञ्चेमा धर्मज्ञोऽधर्मवत्त्यजेत् ॥ १२ ॥

ITRANS:

vidharmaḥ para-dharmaś caābhāsa upamā chalaḥadharma-śākhāḥ pañcemādharma-jño ’dharmavat tyajet

Translation:

There are five branches of irreligion, appropriately known as irreligion [vidharma], religious principles for which one is unfit [para-dharma], pretentious religion [ābhāsa], analogical religion [upadharma] and cheating religion [chala-dharma]. One who is aware of real religious life must abandon these five as irreligious.

Purport:

Any religious principles opposed to the principle of surrendering to the lotus feet of the Supreme Personality of Godhead, Kṛṣṇa, 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 Kṛṣṇa 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 Kṛṣṇa consciousness. Everything but the principle of religion recommended by Kṛṣṇa — sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja — should be given up as irreligion.