Some years ago I was chatting to someone at a conference about the work I had been doing on Mahāyoga texts in the Dunhuang collections. “But what,” he asked, “is Mahāyoga anyway?” Though the later Nyingma tradition has perfectly good answers to this question, I couldn’t give him a satisfactory answer about what it meant in early (pre-11th century) Tibet. It would be good to know, because references to Mahāyoga often crop up in the Dunhuang manuscripts. Moreover, if the Testament of Ba is to be believed, when the Tibetan emperor Tri Song Detsen set up a massive Buddhist translation project in Tibet in the 9th century, he specifically banned Mahāyoga texts from being translated.
In fact it turns out that the Tibetans, during their first exposure to tantric Buddhism, had also asked themselves what Mahāyoga stands for. I found the answer in a tatty manuscript containing a text called A Summary of the View of Mahāyoga According to Scripture. So I translated that text and wrote an article all about Mahāyoga in early Tibet, which was published in 2008. I’ve finally scanned the article, and it’s now on the Author page of this site, or you can just click here.