Kautilya's Arthashastra 14.3.70

14.3.70

caturbhaktopavāsī kṛṣṇacaturdaśyāṃ baliṃ kṛtvā śūlaprotasya puruṣasyāsthnā kīlakān kārayet //

Having fasted for four nights and offered animal sacrifice (bali) on the fourteenth day of the dark half of the month, one should get a few bolt-like pieces prepared from the bone of a man put to the gallows. When one of these pieces is put in the feces or urine (of an enemy), it causes (his) body to grow in size (ánáha); and when the same piece is buried under the feet or seat (of an enemy), it causes death by consumption; and when it is buried in the shop, fields, or the house (of an enemy), it causes him loss of livelihood.