Except for Sisupala, those who go against the regulative principles cannot attain salvation and are surely destined for hellish life. The regulative principle is that one must always think of Krsna, whether as a friend or enemy

Expressions researched:
"Except for Sisupala, those who go against the regulative principles cannot attain salvation and are surely destined for hellish life. The regulative principle is that one must always think of Krsna, whether as a friend or enemy"

SB Canto 7

The only business of the Māyāvādī atheists is to make Kṛṣṇa formless, and consequently, because of this severe offense at the lotus feet of Kṛṣṇa, they cannot expect salvation. Śrīla Viśvanātha Cakravartī Ṭhākura says in this connection: tena śiśupālādi-bhinnaḥ pratikūla-bhāvaṁ didhīṣur yena iva narakaṁ yātīti bhāvaḥ. Except for Śiśupāla, those who go against the regulative principles cannot attain salvation and are surely destined for hellish life. The regulative principle is that one must always think of Kṛṣṇa, whether as a friend or enemy.

SB 7.1.32, Translation and Purport:

Somehow or other, one must consider the form of Kṛṣṇa very seriously. Then, by one of the five different processes mentioned above, one can return home, back to Godhead. Atheists like King Vena, however, being unable to think of Kṛṣṇa's form in any of these five ways, cannot attain salvation. Therefore, one must somehow think of Kṛṣṇa, whether in a friendly way or inimically.

Impersonalists and atheists always try to circumvent the form of Kṛṣṇa. Great politicians and philosophers of the modern age even try to banish Kṛṣṇa from Bhagavad-gītā. Consequently, for them there is no salvation. But Kṛṣṇa's enemies think, "Here is Kṛṣṇa, my enemy. I have to kill Him." They think of Kṛṣṇa in His actual form, and thus they attain salvation. Devotees, therefore, who constantly think of Kṛṣṇa's form, are certainly liberated. The only business of the Māyāvādī atheists is to make Kṛṣṇa formless, and consequently, because of this severe offense at the lotus feet of Kṛṣṇa, they cannot expect salvation. Śrīla Viśvanātha Cakravartī Ṭhākura says in this connection: tena śiśupālādi-bhinnaḥ pratikūla-bhāvaṁ didhīṣur yena iva narakaṁ yātīti bhāvaḥ. Except for Śiśupāla, those who go against the regulative principles cannot attain salvation and are surely destined for hellish life. The regulative principle is that one must always think of Kṛṣṇa, whether as a friend or enemy.