Śrīmad-Bhāgavatam · Text 1.4.27
Who is speaking and story frame
नातिप्रसीदद्धृदय: सरस्वत्यास्तटे शुचौ ।
वितर्कयन् विविक्तस्थ इदं चोवाच धर्मवित् ॥ २७ ॥
nātiprasīdad-dhṛdayaḥ
sarasvatyās taṭe śucau
vitarkayan vivikta-stha
idaṁ covāca dharma-vit
Thus the sage, being dissatisfied at heart, at once began to reflect, because he knew the essence of religion, and he said within himself:
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