These eight are the immediate indications of a man destined to destruction, viz., hating the Brahmanas, disputes with Brahmanas, appropriation of a Brahmana’s possessions, taking the life of Brahmana, taking a pleasure in reviling Brahmanas, grieving to hear the praises of Brahmanas, forgetting them on ceremonious occasions, and giving vent to spite when they ask for anything. These transgressions a wise man should understand, and understanding, eschew.
In plain words: Vidura lists eight signs that a man is heading for ruin, all about mistreating Brahmanas (priests and scholars): hating them, fighting with them, taking their property, killing them, insulting them, being upset when they are praised, forgetting them at ceremonies, and being spiteful when they ask for something. A wise person should recognise these wrongs and avoid them.