Valmiki Ramayana Kishkindha Kanda Sarga 16 Shloka 37
Original Shlokaइन्द्रध्वज इवोद्धूतः पौर्णमास्यां महीतले। आश्वयुक्समये मासि गतश्रीको विचेतनः4.16.37।।
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आश्वयुक्समये in the month of Aswayuja, मासि in a month, पौर्णमास्याम् on the full Moon day, महीतले on the earth, उद्धूतः was thrown down, इन्द्रध्वज इव like Indra's staff, वाली Vali, गतश्रीको lost his brilliance, विचेतनः fell unconscious
Vali fell lustreless on the ground. He was thrown down unconscious like the banner (hoisted in honour) of Indra on the fullmoon day of Aswayuja month.