佛頂尊勝陀羅尼經教跡義記 2.107

2.107

唐云普遍清淨也。解曰：普遍清淨者，根本後得智，事理互緣，自利利他，普皆清淨。又解：真言三昧令心等持，心境兩亡能所俱息，聲聞執境，緣覺捨心，不了所緣，即生二妄。若悟總持，修瑜伽觀，俱遣其執，妄緣永斷，所執不生，了本還源，是法平等，菩提煩惱、生死涅槃，無始已來體本清淨，無縛無解由若虛空。持誦真言，普皆清淨也。

In Chinese, it means "universally pure." The explanation states: "Universally pure" means that fundamental cognition and subsequent cognition, phenomena and principle inter-conditioning one another, self-benefit and other-benefit, are all universally pure. Another explanation states: The samādhi of the mantra brings the mind into equanimity, mind and objects are both forgotten, subject and object both cease; śrāvakas grasp at objects, and pratyekabuddhas discard the mind, and by failing to understand what is conditioned they give rise to two delusions. If one awakens to retention (dhāraṇī) and cultivates yoga contemplation, both attachments are dispelled, delusional conditions are severed forever, grasped objects do not arise, and one realizes the origin and returns to the source: this Dharma is equal; bodhi and defilements, saṃsāra and nirvāṇa, have from beginningless time been pure in essence, unconditioned by bondage and liberation, just like space. By upholding and reciting the mantra, all are universally purified.