One who meditates in this way, concentrating his mind upon the always auspicious form of the Lord, is very soon freed from all material contamination, and he does not come down from meditation upon the Lord.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
एवं भगवतो रूपं सुभद्रं ध्यायतो मनः । निर्वृत्या परया तूर्णं सम्पन्नं न निवर्तते
evaṃ bhagavato rūpaṃ subhadraṃ dhyāyato manaḥ | nirvṛtyā parayā tūrṇaṃ sampannaṃ na nivartate
SB 4.8.52