Kautilya's Arthashastra 5.1.34

5.1.34

pratipannaṃ karmaṇi rasena lohamusalair vā ghātayet "karmavyāpadā hataḥ" iti //

If a seditious minister is addicted to witchcraft, a spy under the guise of an accomplished wizard may make him believe that by manifesting (in witchcraft) any one of the beautiful things,--a pot containing an alligator, or a tortoise or crab--he can attain his desired end. While, with this belief, he is engaged in the act of witchcraft, a spy may murder him either by poisoning him or by striking him with an iron bar, and declare that he brought his own death by his proclivity to witchcraft.