durāpā hy alpa-tapasaḥ
sevā vaikuṇṭha-vartmasu
yatropagīyate nityaṁ
deva-devo janārdanaḥ
durāpā - very difficult to achieve; hi - certainly; alpa-tapasaḥ - by a person not advanced in spiritual life; sevā - service; vaikuṇṭha-vartmasu - unto persons on the path back home, back to Godhead; yatra - wherein; upagīyate - is worshiped and glorified; nityam - regularly; deva-devaḥ - the Supreme Personality of Godhead; janārdanaḥ - Lord Kṛṣṇa.
This verse is a quotation from Śrīmad-Bhāgavatam (3.7.20). It was spoken by Vidura in his conversation with Maitreya Ṛṣi, a great devotee of the Lord.