Valmiki Ramayana Aranya Kanda Sarga 52 Shloka 31

वैश्रवणानुजः brother of Vaisravana, महोल्कामिव like a massive comet, स्वतेजसा in her natural radiance, आकाशे in the sky, दीप्यमानाम् glowing, तां सीताम् Sita, आकाशम् into the sky, आविश्य having entered, जहार carried.

The younger brother of Vaisravana (Ravana), like a massive comet, carried Sita, who was glowing in the radiance of her own beauty, and entered the sky.