Shiva Purana
यद्भयात्पाण्डवास्सर्वे कौरवाञ्जेतुमक्षमाः ॥ आसन्नष्टामहावीरा अपि सर्वे च कोविदाः ॥ १७ ॥
Fearing him, the Pāṇḍavas, though they were great heroes and very skilful, became incapable of conquering the Kauravas.
english translation
yadbhayAtpANDavAssarve kauravAJjetumakSamAH ॥ AsannaSTAmahAvIrA api sarve ca kovidAH ॥ 17 ॥
hk transliteration by Sanscript