摩訶止觀 6.177

6.177

云何觀此二智即是無明？若言是明，種智現前，洞識諸佛十力、無畏，一切諸法圓足覺了，可得是明；而今不爾，豈非無明？觀此無明，即為三番：一、觀無明，二、觀法性，三、觀真緣。

How does one contemplate that these two wisdoms are themselves avidyā? If one says they are clarity, then when sarvākārajñatā appears before one, deeply discerning the Tathāgata's ten powers and fearlessnesses, and all dharmas are awakened to completely and fully, they may be considered clarity; but now that it is not so, are they not avidyā? In contemplating this avidyā, there are three rounds: first, contemplating avidyā; second, contemplating dharmatā; third, contemplating the true and conditions.