摩訶止觀 6.23

6.23

若用世智斷諸思惑，名「盡智」；無漏智斷，名「無生智」。是名「體思觀」，破三界九九八十一品思惑盡，名「破法遍」也。

If one uses worldly wisdom to sever the delusions of thought, it is called the "knowledge of exhaustion"; if severed by unpolluted wisdom, it is called the "knowledge of non-arising". This is called the "contemplation of directly realizing thought[-delusions]". Breaking the nine times nine—eighty-one grades—of thought-delusions in the three realms completely is called "breaking dharmas universally".