If, while practicing the Mahayana during eons as numerous as the sands of the Ganges, a Bodhisattva continuously violates the precepts due to attachment, his fault is mild. If a Bodhisattva violates one precept moved by aversion, even once, his fault is very serious.
Why? Because a Bodhisattva who violates the precepts out of attachment still appreciates sentient beings, while a Bodhisattva who violates one precept due to aversion disdains beings.
A Bodhisattva should not fear those passions that might help to keep him appreciative of beings, but should fear those passions that might make him disdain beings.
—Buddha Shakyamuni, Arya Vinaya Viniscayopāli Pariprccha Sutra