Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 32
Sanskrit:
एवं निवसतोस्तस्मिन् रामकेशवयोर्व्रजे ।शरत्समभवद् व्यभ्रा स्वच्छाम्ब्वपरुषानिला ॥ ३२ ॥
ITRANS:
evaṁ nivasatos tasminrāma-keśavayor vrajeśarat samabhavad vyabhrāsvacchāmbv-aparuṣānilā
Translation:
While Lord Rāma and Lord Keśava were thus dwelling in Vṛndāvana, the fall season arrived, when the sky is cloudless, the water clear and the wind gentle.