Valmiki Ramayana Aranya Kanda Sarga 10 Shloka 5
Original Shlokaवसन्तो धर्मनिरता वने मूलफलाशनाः। न लभन्ते सुखं भीता राक्षसैः क्रूरकर्मभिः।।3.10.5।।
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मूलफलाशनाः living on roots and fruits, धर्मनिरताः engaged in righteous activition वने in the forest, वसन्तः residing, क्रूरकर्मभिः by cruel activities, राक्षसैः by demons, भीताः are afraid, सुखम् happiness, न लभन्ते do not get.
The sages living in the forest, eating roots and fruits and ever engaged in righteous activities are afraid of the depredations of the demons, with their happiness gone.