It is an even greater bad karma for someone who is practicing the mahāyāna to have envy

The kind Buddha taught again and again that the era when desire, anger, and envy are widespread is a degenerate era. It is a time when beings fall under the power of mental afflictions, ignorance and wrong views, and therefore during this time we should never stray from the training that subjugates desire and anger. The Buddha taught that we should reject bad actions, which arise from desire, anger, and ignorance, and we should practice good actions, which have love and compassion as their nature, and we should tame the mind that contains desire, anger and ignorance. This is the true way of practicing for those who have faith in the Dharma.

If two women who follow the Dharma are envious of each other, that is worse bad karma than if just two ordinary women were envious of each other, and it is an even greater bad karma for someone who is practicing the mahāyāna to have envy. Whether someone is a Dharma master, a tulku, a leader, or so on, whoever they are they will certainly become stained by envy. It is extensively taught within both the mahāyāna sutras and the tantras that anyone who with envy and disrespect speaks wrongly, speaks badly, or criticizes a bodhisattva or someone who is practicing in their heart the view of the profound bodhicitta, then that person will have enormously bad karma.

 Hungkar Dorje Rinpoche, “Love and Peace“