維摩經玄疏 5.118

5.118

一、明真性解脫者，此經云「婬、怒、癡性，即是解脫」，今明「婬、怒、癡性」即是《勝鬘經》明「自性清淨心，不為煩惱所染」。若煩惱不能染，是則生死莫之能拘，性自無累，名為解脫，故此經云「如優波離以心相得解脫時，寧有垢不？一切眾生心相無垢，亦復如是」，是名不思議真性解脫也。

First, explaining the liberation of true nature: this sūtra says, 'The nature of lust, anger, and delusion is itself liberation.' Now it is explained that 'the nature of lust, anger, and delusion' is what the Śrīmālā Sūtra explains as 'the intrinsically pure mind, undefiled by afflictions.' If afflictions cannot defile it, then birth and death cannot bind it; being intrinsically free of entanglement, it is called liberation. Hence this sūtra says: 'When Upāli attained liberation through the marks of the mind, was there any defilement? The marks of the minds of all sentient beings being without defilement is likewise so.' This is called the inconceivable liberation of true nature.