HH Kyabje Dodrupchen Rinpoche's last instruction before he passed into Parinirvana:
We hear many stories of famous Lamas and spiritual leaders, many with big names — Geshes who have culminated their scholarship on the five great volumes of Buddha's canon and the great Indian treatises, and big-named Lamas with names of "Khenpo," "Lama," and "Tulku," who have failed to tame their own minds, and therefore have become the servants of their emotional poisons, making heinous negative karma. And they lead themselves and others to ruination.
To give you some examples, during Jetsun Milarepa's time, there was a Geshe named Geshe Tsagphuwa, who was so jealous of Jetsun Milarepa that he offered Milarepa yogurt laced with poison. Or the Geshe who accompanied Dragyur Marpa Lotsawa from India to Tibet, and became so jealous of Marpa Lotsawa that while the two were on a boat, he threw all of Marpa Lotsawa's sacred texts which Marpa had brought from India into the river. There was also the Geshe who led the Chinese army into Tibet, and then the Geshe who, when he was in debate with another Geshe, stuck a metal rod into the ear of his debate opponent. When we think of such things, it is truly horrifying and saddening — these accounts. And there are countless more cases like the ones I mentioned.
Similarly, there are retreatants who stay many years on retreat, meditating on deity yoga development and completion stages, but whose minds are still not imbued with renunciation or bodhichitta, and they have turned their backs to the authentic path. They are bound by their attachments and clinging, and they fall into the trap of thinking the deity exists as a real entity from its own side. So they end up turning into ghosts and king demons of broken samaya. There are many stories of these things happening as well.
For example, in my home country there are different demonic entities which are known as the Nyigyal demon, Dzigyal demon, Lug-gyal demon, and so forth. All of these demons were once retreatants and Lamas who turned into ghosts and demons. There are many demons, like (here, Rinpoche named a spirit), who were once big-named Lamas and hermits who spent many years on retreat. But because they did not tame their own minds, they went down the wrong path and ultimately became reborn as ghosts and demons who have taken the life-breath of (ie. killed) many sentient beings. The root cause of all of this is not taming one's own mind. That's what it comes down to.
So I ask the teachers to please only teach the Lojong, the mind-training practices that tame the mindstream. Focus your teachings on the mind-training practices and teach in such a way that tears helplessly fall from your students’ eyes. Without mind-training, they will not become good Dharma practitioners. If you teach mind-training well and people practice mind-training, they will become good practitioners.
