大毘盧遮那成佛神變加持經 (Shubhakarasimha & Yixing 724) 7.131

7.131

The mantra of Mañjuśrī is: Namaḥ samantabuddhānāṃ, he he kumāraka vimuktipathasthita smara smara pratijñāṃ svāhā. [296 = 32]

Clasp the left and right hands together in the hollow hand-clasp;

the middle fingers are intertwined with the ring fingers,

And the two forefingers are bent around onto the thumbs,

like hooks in shape, to form the mystic seal.

Use it to apply to [all] parts of your body

and then perform sundry deeds.

You should know that the yoga for rotating the [seed-]syllables

of buddhas and bodhisattvas is also like this.

Alternatively, it is no infraction to use in this manner

mantras and seals explained in other sutras,

And either base yourself on different ritual rules explained in those

[sutras]

or use the ordinary gateway to the three mysteries.

For him who understands how to rotate [the letters of a mantra]

everything that he does will be successful.

The general seed heart[-mantra] is: Namaḥ samantabuddhānāṃ, ka. (Homage to all Buddhas! Ka.) [297]

The letter-gateway Ka explained in the scriptures

is that all dharmas are without activity (kārya):

With the light of this principle

you should meditate on the true meaning of this sound.

The seal of the cintāmaṇi, king of jewels:

interlock the five fingers of the left and right hands—

It is the form of the adamantine hand-clasp,

common to all bodhisattva rites.

The mantra of all bodhisattvas is: Namaḥ samantabuddhānāṃ, sarvathā vimativikiraṇa dharmadhātunirjāta saṃ saṃ ha svāhā. [298 = 69]

The letter Kha contains all colors, and to it is added a great dot of

emptiness (i.e., Khaṃ);

As declared earlier, place it on top of your head:

You will gain equality with empty space, and all dharmas are also

said to be thus.

Then, inside your head imagine the primordial letter (A),

Adorned with a pure white dot (i.e., Aṃ), the supreme essence of the

hundred[-lettered] vidyā.

The eyes, like bright lamps, have the letter of unsulliedness with the

great [dot of] emptiness (i.e., Raṃ).

Dwell in the station of your deity, and the Perfectly Awakened One

will appear in front of you:

You should look in this manner until he becomes quite clear.