大乘義章 9.11

9.11

金剛三昧義五門分別（釋名一　體性二　開合辨相三　就位分別四　有惑無惑五）

The meaning of the vajrasamādhi is differentiated under five headings: (1) explaining the name; (2) its essential nature; (3) discerning its characteristics through expansion and synthesis; (4) differentiation according to stages; (5) having defilements versus lacking defilements.