Thus the sage, being dissatisfied at heart, at once began to reflect, because he knew the essence of religion, and he said within himself:
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नातिप्रसीदद्धृदयः सरस्वत्यास्तटे शुचौ । वितर्कयन् विविक्तस्थ इदं चोवाच धर्मवित्
nātiprasīdaddhṛdayaḥ sarasvatyāstaṭe śucau | vitarkayan viviktastha idaṃ covāca dharmavit
SB 1.4.27