法華論疏 2.446

2.446

此釋佛知見者，開示悟入四句皆有佛知見，今寄初章總釋之也。如來能證以如實智知彼義故者，如來能證謂能證法身。如實智者，出能證之智也。知彼義故者，彼義即是法身，出所知法身也。

This explains the Buddha's knowledge and vision: the four phrases—opening, revealing, awakening to, and entering—all contain the Buddha's knowledge and vision; here it is explained generally in reliance upon the initial section. "What the Tathāgata can realize, because he knows that object with knowledge of reality as it is": "What the Tathāgata can realize" refers to being able to realize the dharmakāya. "Knowledge of reality as it is" presents the knowledge that can realize. "Because he knows that object": that object is precisely the dharmakāya; it presents the dharmakāya that is known.