Mbh 13.23.6d

They who live by selling hair, they who subsist by selling poisons, and they who live by selling milk, have to sink in hell. They who put obstacles in the path of Brahmanas and kine and maidens, O Yudhishthira, have to sink in hell. They who sell weapons, they who forge weapons, they who make shafts, and they who make bows, have to sink in hell. They who obstruct paths and roads with stones and thorns and holes have to sink in hell. They who abandon and cast off preceptors and servants and loyal followers without any offence, O chief of Bharata's race, have to sink in hell. They who set bullocks to work before the animals attain to sufficient age, they who bore the noses of bullocks and other animals for controlling them the better while employed in work, and they who keep animals always tethered, have to sink in hell. Those kings that do not protect their subjects while forcibly taking from them a sixth share of the produce of their fields, and they who, though able and possessed of resources, abstain from making gifts, have to sink in hell. They who abandon and cast off persons that are endued with forgiveness and self-restraint and wisdom, or those with whom they have associated for many years, when these are no longer of services to them, have to sink in hell. Those men who themselves eat without giving portions of the food to children and aged men and servants, have to sink in hell.