Valmiki Ramayana Sundara Kanda Sarga 10 Shloka 22

अचलसङ्काशः (he) appeared like a mountain, सः he, राक्षसेश्वरः lord of demon, परिपूर्णाभ्याम् fully developed, ताभ्याम् with both of them, भुजाभ्याम् with arms, शृङ्गाभ्याम् with two peaks, मन्दरः इव resembled mount Mandara, शुशुभे shone.

The lord of demons looked splendid like a mountain with his long, fully developed arms. He appeared like Mandara mountain with two lofty peaks.