My dear Prahlāda, may you live a long time. One cannot appreciate or understand Me without pleasing Me, but one who has seen or pleased Me has nothing more for which to lament for his own satisfaction.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मामप्रीणत आयुष्मन् दर्शनं दुर्लभं हि मे । दृष्ट्वा मां न पुनर्जन्तुरात्मानं तप्तुमर्हति
māmaprīṇata āyuṣman darśanaṃ durlabhaṃ hi me | dṛṣṭvā māṃ na punarjanturātmānaṃ taptumarhati
SB 7.9.53