Mahabharata
The Mahābhārata is one of the two major Sanskrit epics of ancient India revered in Hinduism, the other being the Rāmāyaṇa. It narrates the events and aftermath of the Kurukshetra War, a war of succession between two groups of princely cousins, the Kauravas and the Pāṇḍavas
“ He, who, without being checked by the restraints of the scriptures, sells a Cow, or kills one, or eats the flesh of a cow, or they, who, for the sake of wealth, suffer a person to kill kine,—all these, viz., he that kills, he that eats, and he that permits the slaughter,—rot in hell for as many years as there are hairs on the body of the cow so slain.”
Anushasan Parva, MAHABHARATA- Anusasana Parva: Section - https://twitter.com/TheMaleficiant/status/1673125803801088000