楞伽阿跋多羅寶經註解 3.177

3.177

宗說通相前既說已，此又說者何也？前通三乘，此唯在佛。又前為眾請，此佛自述。言愚癡凡夫等者，謂此二法在凡夫嘗無之，但為迷轉，故全體不知。迴轉者，謂迷自己故迴內迴外，惟著自心現外相等境界，亦著方便言教，故於自心宗本離四句所通清淨之相不能明了，於是大慧因而致請。言不得短者，謂宗通而說不通，其短在化導；說通而宗不通，其短在自行。二者俱通，則不得為短也。

Since the characteristics of mastery of the tenet and of teaching were already spoken of earlier, why are they spoken of again here? Previously they pertained to the three vehicles, whereas here they belong solely to the Buddha. Furthermore, previously it was a request made on behalf of the assembly, whereas here the Buddha explains it spontaneously. When it says "foolish ordinary persons," etc., it means that these two dharmas are never absent in ordinary persons, but because they are turned about by delusion, they do not recognize them in their entirety. "Turned around" means that because they are deluded about themselves, they turn inward and turn outward, clinging exclusively to realms such as external marks appearing from their own mind, and also clinging to provisional verbal teachings; hence they are unable to clearly comprehend the pure marks of mastery intrinsically detached from the catuṣkoṭi in the tenet of their own mind. Thereupon Mahāmati brings forward this request. Saying "will not find any flaw" means: if one masters the tenet but does not master teaching, the flaw lies in converting and guiding others; if one masters teaching but does not master the tenet, the flaw lies in one's personal practice. When both are mastered, there can be no flaw.