Only the purified soul can attain the perfection of associating with the Personality of Godhead in complete bliss and satisfaction in his constitutional state. Whoever is able to renovate such devotional perfection is never again attracted by this material world, and he never returns.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तेनात्मनाऽऽत्मानमुपैति शान्त- मानन्दमानन्दमयोऽवसाने । एतां गतिं भागवतीं गतो यः स वै पुनर्नेह विषज्जतेऽङ्ग
tenātmanā''tmānamupaiti śānta- mānandamānandamayo'vasāne | etāṃ gatiṃ bhāgavatīṃ gato yaḥ sa vai punarneha viṣajjate'ṅga
SB 2.2.31