Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 15
Sanskrit:
दुष्कर: को नु साधूनां दुस्त्यजो वा महात्मनाम् ।यै: संगृहीतो भगवान् सात्वतामृषभो हरि: ॥ १५ ॥
ITRANS:
duṣkaraḥ ko nu sādhūnāṁdustyajo vā mahātmanāmyaiḥ saṅgṛhīto bhagavānsātvatām ṛṣabho hariḥ
Translation:
For those who have achieved the Supreme Personality of Godhead, the master of the pure devotees, what is impossible to do, and what is impossible to give up?