大日經持誦次第儀軌 1.141

1.141

又應如前方便觀法界字以為頂相，被服金剛甲冑，由斯祕密莊嚴故，即得如金剛自性無能沮壞之者。諸有聞其音聲——或見、或觸——皆必定於阿耨多羅三藐三菩提一切功德皆悉成就，與大日如來等無有異也。

Again, one should, according to the previous means, visualize the dharmadhātu syllable as the mark of the crown, and put on the vajra armor; by means of this secret adornment, one immediately obtains the vajra self-nature, which cannot be destroyed. All who hear his voice—whether seeing or touching him—will definitely achieve all the merits of anuttarasamyaksambodhi, being no different from Mahāvairocana Tathāgata.