Valmiki Ramayana Yuddha Kanda Sarga 76 Shloka 69
Original Shlokaनिर्भिद्यमानस्सहसासहमानश्चतान् शरान् ।।6.76.69।। कुम्भस्यधनुराक्षिप्यबभञ्जेन्द्रधनुष्प्रभम् ।
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निर्भिद्यमानः snatching, सः he, तान् them, शरान् arrows, सहमानः tolerating the pain, कुम्भस्य Kumbha's, इन्द्रधनुष्प्रभम् like Indra's rainbow, धनुः bow, सहसा forcibly, आक्षिप्य pulling, बभञ्च broke.
He snatched the bow of Kumbha forcibly which was like Indra's rainbow, pulled it and broke, while tolerating the pain of the arrows.