As for PSD and PBG consisting almost exclusively of excerpts from LSSP,
certain circles within the Nyingma School (such as the
major monastic colleges
at the Dzogchen and Namdrol Ling monasteries) hold that LSSP was
actually composed by Longchen Rabjampa (1308-1363) and later became
presented under Tsongkhapa s name. However, others, such as the contemporary
great Nyingma scholar and Dzogchen master Alak Zenkar Rinpoche,19 do
not agree with this.20 The late Dzogchen Khenpo Tubten Tsondru Piintsos21
(1920-1979) SN says:
There is an oral tradition of the great Dzogchen Khenpos that says the
following. The Dharma Lord, Patrul Rinpoche, composed his General
Topics, Word Commentary, and Progressive Stages of Meditation of
prajriaparamita in accordance with the commentary of the great
Venerable Tsongkhapa, the Golden Garland. That these three are
based on said commentary of Venerable Tsongkhapa [means nothing
but that they] represent the pure assertions of the followers of
the early translations because [the Golden Garland] is [actually] the
prajnaparamita commentary by the Omniscient Longchenpa.22