Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 8
Sanskrit:
कदाचिल्लोकजिज्ञासुर्गूढो रात्र्यामलक्षित: ।चरन्वाचोऽशृणोद् रामो भार्यामुद्दिश्य कस्यचित् ॥ ८ ॥
ITRANS:
kadācil loka-jijñāsurgūḍho rātryām alakṣitaḥcaran vāco ’śṛṇod rāmobhāryām uddiśya kasyacit
Translation:
Śukadeva Gosvāmī continued: Once while Lord Rāmacandra was walking at night incognito, hiding Himself by a disguise to find out the people’s opinion of Himself, He heard a man speaking unfavorably about His wife, Sītādevī.