Valmiki Ramayana Yuddha Kanda Sarga 67 Shloka 161
Original Shlokaस तस्यबाहुंसहतालवृक्षंसमुद्यतंपन्नगभोगकल्पम् । इन्द्रास्त्रयुक्तेनजघानरामोबाणेनजाम्भूनदचित्रितेन ।।6.67.161।।
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सःरामः that Rama, इन्द्रास्त्रयुक्तेन yoking bow charged with Indra's mantra, जाम्भूनदचित्रितेन decked with gold, बाणेन arrow, तस्य of his, पन्नगभोगकल्पम् like coils of serpent, समुद्यतम् held, सतालवृक्षम् the Palmyra tree, बाहुम् arms, जघान severed.
Then Rama yoking his bow with an arrow charged with Indra's mantra and decked with gold severed Kumbhakarna's arm which was like coils of serpent and held the palmyra tree.