大乘起信論義記 2.144

2.144

'The mark of the purity of wisdom' explains the mark of innate enlightenment returning to purity in accordance with defilement. 'The mark of inconceivable karma' explains the mark of the karmic functioning of innate enlightenment returning to purity. If these two marks were separated from defiled conditions, they could not be established; hence it says 'in accordance with defilement.'