大毘盧遮那經供養次第法疏 1.29

1.29

「南無十方三世佛」以下，第三歸依方便真言門。此真言智外無妄，外無妄處即是真言，自身若誦此真言悟自真，故言歸依。亦有誦真言。頌中南無者，度我也，亦云禮敬也。三種常身者，法身等三身。悟生死本不生，故言常身也。正法藏者，正者蕳邪，法者軌則，藏者含恒沙德也。大心眾者，菩薩乘也。

From "Namo to the Buddhas of the ten directions and the three times" onward is the third, the mantra gate of the upāya of taking refuge. Outside of the wisdom of this mantra there is no delusion; where there is no delusion outside, that is the mantra. If one recites this mantra with one's own body and awakens to one's own reality, it is therefore called taking refuge. There is also the recitation of the mantra. In the verse, namo means "deliver me", and also "homage and reverence". "The three eternal bodies" are the three bodies: the dharmakāya and so on. Awakening to the unproduced nature of birth and death is therefore called the eternal body. In "the treasury of the true Dharma", "true" excludes the erroneous, "Dharma" means model or rule, and "treasury" contains virtues numerous as the sands of the Ganges. "The assembly of great mind" refers to the Bodhisattva vehicle.