Valmiki Ramayana Kishkindha Kanda Sarga 48 Shloka 5
Original Shlokaते भक्षयन्तो मूलानि फलानि विविधानि च। अन्वेषमाणा दुर्धर्षान्यवसं स्तत्र तत्र ह।।4.48.5।।
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दुर्धर्षाः unassailable, ते those, विविधानि many, मूलानि roots, फलान्यपि and also fruits, भक्षयन्तः eating, अन्वेषमाणाः searching, तत्र तत्र here and there, न्यवसन् dwelt.
The unassailable monkeys ate roots and fruits and halted here and there at different places searching for Sita.