श्यावपाणिपाददन्तनखं शिथिलमांसरोमचर्माणं फेनोपदिग्धमुखं विषहतं विद्यात् ॥ कZ_०४.७.०८ ॥
śyāvapāṇipādadantanakhaṃ śithilamāṃsaromacarmāṇaṃ phenopadigdhamukhaṃ viṣahataṃ vidyāt
One should identify death by poison when the hands, feet, teeth, and nails are darkened; the flesh, hair, and skin are slack; and the mouth is smeared with foam.
Poisoning is a high-risk covert crime (including palace intrigue); standardized signs enable faster attribution and preventive policing.