mkhyen brtse'i bka' babs
The Khyentse Kabab collection, in twenty-two volumes, is structured around the notion of the seven types of authoritative transmission (bka' babs bdun) that were considered an essential aspect of Khyentse Wangpo's unique endowment as a highly influential promulgator of the Buddhist teachings. In his biography of Khyentse Wangpo, Jamgön Kongtrul mentions an early reference to this set of seven in an unnamed work by Thangtong Gyalpo that prophesied the arrival of Khyentse Wangpo, referring to him as "bka' babs bdun ldan mdo sngags gling," which references his treasure revealer (gter ston) title, Pema Ösel Dongak Lingpa (Pad+ma 'od gsal mdo sngags gling pa), along with the epithet "Possessor of the Seven Authoritative Transmissions" (bka' babs bdun ldan). However, one of the most commonly cited references to these seven comes from another prophecy (lung bstan) found in the treasure revelation of Chogyur Lingpa, The Sacred Teachings of the Three Series of the Great Perfection (Dam chos rdzogs pa chen po sde gsum), which states:
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