Valmiki Ramayana Sundara Kanda Sarga 59 Shloka 15
Original Shlokaपनसस्योरुवेगेन नीलस्य च महात्मनः। मन्दरोऽप्यवशीर्येत किंपुनर्युधि राक्षसाः।।5.59.15।
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पनसस्य Panasa's, महात्मनः great soul, नीलस्य च even Nila, उरुवेगेन by the speed of his thighs, मन्दरोऽपि even Mandara mountain, अवशीर्येत would be shattered, युधि in battle, राक्षसाः demons, किं पुनः what to say again.
"Even the mountain Mandara would be shattered by great Panasa or Nila by the speed of their thighs. What to say in a battle against ogres?