Valmiki Ramayana Aranya Kanda Sarga 39 Shloka 5
Original Shlokaनिहत्य दण्डकारण्ये तापसान्धर्मचारिणः। रुधिराणि पिबंस्तेषां तथा मांसानि भक्षयन्।।3.39.5।।
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दण्डकारण्ये in the Dandaka forest, धर्मचारिणः following righteousness, तापसान् ascetics, निहत्य after slaying, तेषाम् their, रुधिराणि blood, पिबन् drinking, तथा likewise, मांसानि flesh, भक्षयन् eating.
I wandered about the Dandaka forest slaying righteous ascetics, drinking their blood and eating their flesh.