Kautilya's Arthashastra 10.3.27

10.3.27

saṃhatya daṇḍaṃ brūyāt "tulyavetano 'smi, bhavadbhiḥ saha bhogyam idaṃ rājyam, mayābhihitaiḥ paro 'bhihantavyaḥ" iti //

As to an open or fair fight, a virtuous king should call his army together, and, specifying the place and time of battle, address them thus: "I am a paid servant like yourselves; this country is to be enjoyed (by me) together with you; you have to strike the enemy specified by me."