Valmiki Ramayana Yuddha Kanda Sarga 63 Shloka 24
Original Shlokaविभ्रमाच्चित्तमोहाद्वाबलवीर्याश्रयेणवा । नाभिपन्नमिदानींयद्व्यर्थातस्यपुनःकथाः ।।6.63.24।।
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विभ्रमात् due to delusion, चित्तमोहाद्वा lack of understanding, बलवीर्यश्रयेणवा or due to pride of strength, यत् that, नाभिपन्नम् did something, तस्य that, इदानीम् now to talk of it, पुःकथाः again the same story, व्यर्था is futile
"Due to delusion, or lack of understanding or due to pride of my strength I did something. To talk of it now again is futile."