Kautilya's Arthashastra 4.11.2

4.11.2

saptarātrasyāntarmṛte śuddhavadhaḥ, pakṣasyāntar uttamaḥ, māsasyāntaḥ pañcaśataḥ samutthānavyayaś ca //

WHEN a man murders another in a quarrel, he shall be tortured to death. When a person wounded in a fight dies within seven nights, he who caused the wound shall be put to instantaneous death (suddhavadhah). If the wounded man dies within a fortnight, the offender shall be punished with the highest amercement. If the wounded man dies within a month, the offender shall be compelled to pay not only a fine of 500 panas, but also an adequate compensation (to the bereaved).