Valmiki Ramayana Yuddha Kanda Sarga 83 Shloka 24
Original Shlokaअदृष्टप्रतिकारेणत्वव्यक्तेनासतासता । कथंशक्यंपरंप्राप्तुंधर्मेणारिविकर्षण ।।6.83.24।।
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अरिविकर्षण crusher of enemies, अदृष्टप्रतिकारेणreward is not seen, त्वव्यक्तेन how to know, असतासता unreal or real, धर्मेण by righteousness, परम् best, प्राप्तुम् attained, कथम् how, शक्यम् is it possible
"O Crusher of enemies! How does righteousness get encountered? It is not seen. How to know whether it is real or unreal? Is it possible to know that the best result is attained by righteousness."