大毘盧遮那成佛經疏 16.30

16.30

次住祕密漫荼羅品。前品說入祕密漫荼羅方便，所謂三種加持也，謂以真言加師之身及所入之壇，并加弟子令住堅固，然後得安住於祕密藏中，故次說住證之品也。

Next is the Chapter on Abiding in the Secret Maṇḍala. The preceding chapter explained the upāya for entering the secret maṇḍala, namely the three kinds of adhiṣṭhāna: using mantras to empower the body of the ācārya and the maṇḍala that is entered, as well as empowering the disciple so that they abide firmly, after which they can peacefully abide within the secret treasury. Therefore, it next explains the chapter on abiding and realization.