法華論疏 2.268

2.268

此第七即是化身。隨眾生意為說修行法者，佛隨眾生意說法，令眾生修行也。此七法次第者，夫欲說法要備七德，一者內窮法原、二外有巧辨、三者知默、四者知悟。此四，內外、語默二雙也。所以有此二雙者，要由備法身現化身故，後三即明三身也。成就彼法者，如來成就隨順眾生意，為眾生說法也。

This seventh is namely the transformation body. 'Preaching the dharma of practice in accord with the minds of beings' means the Buddha preaches the Dharma in accord with the minds of beings to cause beings to practice. As for the sequence of these seven dharmas: whenever one wishes to preach the Dharma, one must possess seven virtues: first, internally plumbing the source of dharmas; second, externally possessing skillful eloquence; third, knowing when to be silent; fourth, knowing when there is awakening. These four are two pairs: internal and external, and speech and silence. The reason there are these two pairs is that they fundamentally depend on possessing the dharmakāya and manifesting the transformation body; hence the last three clarify the three bodies. 'Perfecting that dharma' means the Tathāgata perfects preaching the Dharma for sentient beings in accord with the minds of sentient beings.