Valmiki Ramayana Ayodhya Kanda Sarga 63 Shloka 14
Original Shlokaदेव्यनूढा त्वमभवो युवराजो भवाम्यहम्। ततः प्रावृडनुप्राप्ता मदकामविवर्धिनी।।2.63.14।।
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देवि O Kausalya, त्वम् you, अनूढा not married, अभवः you were, युवराज: भवामि I was prince regent, ततः at that time, मदकामविवर्धिनी inflaming passion and pride, प्रावृट् rainy season, अनुप्राप्ता had set in.
O Kausalya, you were not married then. I was prince regent. The rainy season that inflames passion and pride had just set in.