Valmiki Ramayana Yuddha Kanda Sarga 59 Shloka 14
Original Shlokaयोऽसौगजस्कन्धगतोमहात्मानवोदितार्कोपमताम्रवक्त्रः । प्रकम्पयन्नागशिरोऽभ्युपैतिह्यकम्पनंत्वेनमवेहिराजन् ।।6.59.14।।
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राजन् king!, गजस्कन्धगतः by whom seated on the elephant, is shaking (by his weight) the elephant's head, नवोदितार्कोपमताम्रवक्त्रः coppery face resembles rising Sun, महात्मा great, यःअसौ he who, नागशिरः mounted on elephant, संकम्पयन् Akampana, अभ्युपैति gigantic, एनम् he is, अकम्पनम् Akampana, अवेहि know.
"O King! the one seated on the elephant, by whose weight the elephant head is shaking, whose coppery face is like the rising sun, a gigantic one is Akampana."