Valmiki Ramayana Aranya Kanda Sarga 16 Shloka 9
Original Shlokaप्रकृत्या हिमकोशाढ्यो दूरसूर्यश्च साम्प्रतम्। यथार्थनामा सुव्यक्तं हिमवान्हिमवान्गिरिः।।3.16.9।।
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प्रकृत्या by nature, हिमकोशाढ्यः with snow settled heavily, साम्प्रतम् presently दूरसूर्यश्च distant Sun, हिमवान् Himalaya, गिरिः mountain, हिमवान् snowy mountain, सुव्यक्तम् clearly, यथार्थनामा has a befitting name.
Presently with the Sun far away, the Himalayas abounding in snow has naturally justified its name.