Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 5
Sanskrit:
एकदा नारदो लोकान् पर्यटन् भगवत्प्रिय: ।सनातनमृषिं द्रष्टुं ययौ नारायणाश्रमम् ॥ ५ ॥
ITRANS:
ekadā nārado lokānparyaṭan bhagavat-priyaḥsanātanam ṛṣiṁ draṣṭuṁyayau nārāyaṇāśramam
Translation:
Once, while traveling among the various planets of the universe, the Lord’s beloved devotee Nārada went to visit the primeval sage Nārāyaṇa at His āśrama.