Srimad-Bhagavatam: Canto 4 - Chapter 1 - Verse 31

Sanskrit:

इदं विविक्तं जप्तव्यं पवित्रं मङ्गलं परम् ।नि:श्रेयसकरं चापि श्रूयतां तद्वदामि व: ॥ ३१ ॥

ITRANS:

idaṁ viviktaṁ japtavyaṁpavitraṁ maṅgalaṁ paramniḥśreyasa-karaṁ cāpiśrūyatāṁ tad vadāmi vaḥ

Translation:

Now I shall chant one mantra which is not only transcendental, pure and auspicious, but is the best prayer for anyone who is aspiring to attain the ultimate goal of life. When I chant this mantra, please hear it carefully and attentively.

Purport:

The word viviktam is very significant. No one should think of the prayers recited by Lord Śiva as being sectarian. Rather, they are very confidential, so much so that anyone desiring the ultimate prosperity or auspicious goal of life must take the instructions of Lord Śiva and pray to and glorify the Supreme Personality of Godhead as Lord Śiva himself did.