According to the empirical philosophers, simply by adopting sannyāsa, or retiring from fruitive activities, one at once becomes as good as Nārāyaṇa. But Lord Kṛṣṇa does not approve this principle. Without purification of heart, sannyāsa is simply a disturbance to the social order.
-- Bhagavad-Gita purport 3.4

न यद्वचश्चित्रपदं हरेर्यशो
जगत्पवित्रं प्रगृणीत कर्हिचित् ।
तद्वायसं तीर्थमुशन्ति मानसा
न यत्र हंसा निरमन्त्युशिक्क्षया: ॥ १० ॥

Those words which do not describe the glories of the Lord, who alone can sanctify the atmosphere of the whole universe, are considered by saintly persons to be like unto a place of pilgrimage for crows. Since the all-perfect persons are inhabitants of the transcendental abode, they do not derive any pleasure there.
-Shrimad Bhagvatam Canto 1 Chapter 5 Verse 10