For example, I read in this thread: viewtopic.php?t=19600
Also in this translation of the Heart Sutra: https://throssel.org.uk/wp-content/uplo ... eatwis.mp3"The Śatasāhasrika-prajñāpāramitā, beginning with matter, ending with omniscience and including everything in between, states:
Due to matter being naturally luminous, it is pure and non-afflicted…due to omniscience of all aspects being naturally luminous, it is pure and non-afflicted."
In non-Mahayana "mainsteam" (for lack of a better word) Buddhism, phenomena are not pure, they are conditioned, suffering and non-self. This is the meaning of emptiness and dependent origination there.
But in Mahayana emptiness is unconditioned, phenomena are unborn and non-arising (epithets of Nibbana in mainstream sources). This is why they are said to be pure.
How far off am I in my understanding here?