HH Jigme Phuntsok Rinpoche
If we created the karma of abandoning Dharma, there will be no chance for liberation. This is something we have to be very careful about. What does the karma of abandoning Dharma include? It includes slandering or criticizing Bodhisattvas. We do not know at all where the Bodhisattvas are, therefore we should behave carefully towards anyone. There are Bodhisattvas amongst the monastics and laypeople. We will not know if even an animal is a Bodhisattva.
(Note: According to the sutras, the karma of abandoning Dharma prevents one from taking birth in Sukhavati. One must quickly confess and purify it if one has committed such karmas.)