Valmiki Ramayana Aranya Kanda Sarga 51 Shloka 29
Original Shlokaयथा त्वया कृतं कर्म भीरुणा लोकगर्हितम्।।3.51.29।। तस्कराचरितो मार्गो नैव वीरनिषेवितः।
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भीरुणा by a timid, त्वया you are, यथा like this, लोकगर्हितम् condemned by the whole world, कर्म act, कृतम् is done, तस्कराचरितः adopted by thieves, मार्गः this path, वीरनिषेवितः followed by heroes, नैव not at all.
Your cowardly action will be condemned by the whole world. The path you have chosen is the path of a thief and not of a hero.