大乘起信論義記 2.147

2.147

In the cause, 'relying on the perfuming power of the Dharma' refers to the power of internal perfuming by tathatā and the perfuming power of the external condition of the doctrinal Dharma that flows forth [from it]. This is prior to the grounds; relying on this perfuming power, one cultivates the wholesome roots of accumulation and application. From ascending the grounds onward, practice accords with the realization of tathatā; hence it says 'practicing in accordance with reality.' The practice of the ten grounds ends; hence it says 'fulfilling expedient means.' This is at the vajra[-like samādhi], the culmination of the stage of the cause.