The following is respectfully quoted from “Perfect Conduct” with commentary by Dudjom Rinpoche:
4.b.3(b.4) Abandoning love:
The fourth is wishing that any sentient being should be separated from happiness and losing heartfelt love for them.
To wish any sentient being should be separated from happiness and to stop feeling heartfelt love for them is the fourth root downfall. The object can be one sentient being or many. To wish for them to be separated from happiness and to meet with suffering or misfortune, thus forsaking them and giving up any love for them at all, constitutes this downfall.