Arthashastra
प्रतिहत हत अग्र वेगयोः प्रतिहतम् अग्र पात भग्नं प्रवीर पुरुष संहतं युध्येत, न हत अग्र वेगम् अग्र पात हत वीरम् ॥
Of armies which have either been repelled or have their front destroyed, that which has been repelled may be taken to fight together with fresh men attached to it, but not the army which has lost many of its brave men in its frontal attack.
english translation
pratihata hata agra vegayoH pratihatam agra pAta bhagnaM pravIra puruSa saMhataM yudhyeta, na hata agra vegam agra pAta hata vIram ॥
hk transliteration by Sanscript