Valmiki Ramayana Kishkindha Kanda Sarga 11 Shloka 8
Original Shlokaवीर्योत्सेकेन दुष्टात्मा वरदानाच्च मोहितः। जगाम सुमहाकाय स्समुद्रं सरितां पतिम्।।4.11.8।।
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वीर्योत्सेकेन proud of valour, वरदानात् by virtue of boons, मोहितः deluded, दुष्टात्मा wickedself, महाकायः of huge body, सः he (Dundubhi), सरितां पतिम् lord of rivers, समुद्रम् to ocean, जगाम went.
'Wicked Dundubhi of huge body was proud of his valour and deluded by virtue of the boons, went to the ocean, the lord of rivers.