宗鏡錄 57.13

57.13

Answer: An ancient master explained: Only the sixth and seventh consciousnesses become undefiled. The sixth is the sixth consciousness: in the gate of the first bhūmi, along with twenty-two mental factors, it becomes the wondrously observing wisdom. The seventh is the seventh consciousness: along with twenty-two mental factors, it becomes the equality wisdom. Associated with these two classes of wisdom, both are free from obstruction and defilement, and thus are called undefiled. As for the five consciousnesses, the eighth, and so forth, they are definitively defiled.