Valmiki Ramayana Yuddha Kanda Sarga 71 Shloka 31
Original Shlokaएतेनाराधितोब्रह्मोतपसाभावितात्मना । अस्त्राणिचाप्यवाप्तानिरिपवश्चपराजिताः ।।6.71.31।।
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तपसा by penance, भावितात्मना of supreme intellect, एतेन by him, ब्रह्मा Brahma, आराधितः propitiated, अस्त्राणि च mystic missiles, अवाप्तानि presented, रिपवश्च enemies, पराजिताः defeated.
"By penance on supreme self he propitiated Brahma, who blessed him with mystic missiles by way of boons by which his enemies were subdued."