俱舍論記 3.23

3.23

"The three undefiled faculties... [up to] because they can achieve parinirvāṇa": this explains the third verse, elucidating the three undefiled faculties. The first induces the second; therefore, it has sovereign efficacy regarding [the state of] having known. The second induces the third; therefore, it has sovereign efficacy regarding [the state of] full knowledge. The third can realize nirvāṇa; therefore, it has sovereign efficacy regarding nirvāṇa. Only when the mind is free of defilements does one attain nirvāṇa; for it is not when the mind is not yet liberated from defilements that one can achieve parinirvāṇa. As for "successive [paths]," the second faculty is the path subsequent to the first faculty, and the third faculty is the path subsequent to the second faculty; hence they are called successive paths. The third faculty has sovereignty over nirvāṇa.