Valmiki Ramayana Sundara Kanda Sarga 37 Shloka 36

पर्वतसङ्काशः resembling a mountain, ताम्रवक्त्रः one who has a red face, महाबलः very strong, वज्रदंष्ट्रनखः teeth and nails as strong as diamonds, भीम: dreadful, हरिः vanara, वैदेहीम् to Vaidehi, इदम् this, अब्रवीत् said.

Resembling a mountain in size, with a red face, with teeth and nails strong like diamond, the vanara in dreadful form said to Vaidehi: