Valmiki Ramayana Sundara Kanda Sarga 35 Shloka 80
Original Shlokaमाल्यवान्नाम वैदेहि गिरीणामुत्तमो गिरिः। ततो गच्छति गोकर्णं पर्वतं केसरी हरिः।।5.35.80।।
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वैदेहि Vaidehi, गिरीणाम् among the mountains, उत्तमः the best one, माल्यवान्नाम Malyavan, गिरिः mountain, ततः from there, केसरी Kesari, हरिः monkey, गोकर्णम् Gokarna, पर्वतम् mountain, गच्छति went.
"Oh Vaidehi there is a famous mountain called Malyavan. From there a monkey called Kesari went to mount Gokarna.