Valmiki Ramayana Ayodhya Kanda Sarga 116 Shloka 16
Original Shlokaतेषु तेष्वाश्रमस्थानेष्वबुद्धमवलीय च। रमन्ते तापसां स्तत्र नाशयन्तोऽल्पचेतसः।।2.116.16।।
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अल्पचेतसः debased ones, तेषु तेषु in different, स्थानेषु in ashram sites, अबुद्धम् without being perceived, अवलीय च after concealing themselves, तत्र there, तापसान् the ascetics, नाशयन्तः while destroying, रमन्ते are taking delight.
These debased rakshasas, concealing themselves in various ashram sites take delight in harassing and killing the ascetics.