瑜伽論記 7.191

7.191

答第四問中有兩番，初番，若審思惟，於教於義，觸證解脫等中，思惟可爾不可爾等，安住所緣名為念住。

In answering the fourth question, there are two rounds. In the first round, if one thoroughly reflects upon the teaching and the meaning, and amid touching, realizing, and liberation, reflects on whether it is so or not so, and stably abides upon the cognitive object, this is called the application of mindfulness.