Kautilya's Arthashastra 10.3.46

10.3.46

tad eṣāṃ daśavargādhipatayo vidyuḥ //

A hundred thousand (panas) for slaying the king (the enemy); fifty thousand for slaying the commander-in-chief, and the heir-apparent; ten thousand for slaying the chief of the brave; five thousand for destroying an elephant, or a chariot; a thousand for killing a horse, a hundred (panas) for slaying the chief of the infantry; twenty for bringing a head; and twice the pay in addition to whatever is seized. This information should be made known to the leaders of every group of ten (men).