Although the compilers of [the Blo sbyong brgya rtsa, Mind Training: The Great Collection] do not provide any information on the authorship of this guru yoga text, textual evidence suggests that this is a slightly abbreviated guru yoga instruction found in Shönu Gyalchok's Compendium of Well-Uttered Insights (pp. 23-27). All the passages of this guru yoga mind training are verbatim extracts from this latter work, including the concluding remark: "This guru yoga is drawn from my teacher's words and put into letter." That this is Shönu Gyalchok's work is reinforced by the lineage of the transmission given here, where we read the name of Puṇyaratna as the last to hold this lineage. "Puṇyaratna" is the Sanskritized version of the Tibetan name Sönam Rinchen, who was from Nup Chölung, a person who figures in another mind training text as the one who transmitted the lineage to Shönu Gyalchok. (Thupten Jinpa, Mind Training: The Great Collection, 602n320)
| Citation | bla ma'i rnal 'byor [བླ་མའི་རྣལ་འབྱོར།]. [Guru Yoga Mind Training]. |
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| Author | Zhönu Gyalchok |
