大毘盧遮那成佛神變加持經 (Shubhakarasimha & Yixing 724) 4.77

4.77

vatathāgatapuṇyanirjāte hūṃ hūṃ trāṭ trāṭ apratihate svāhā. [168 = 5]

“Next, stretch the forefingers apart and insert both thumbs in between

[the palms]: this is called the seal of universal light. The mantra is: Namaḥ

samantabuddhānāṃ, jvālāmālini tathāgatārci svāhā. [169 = 19]

“Then form the hollow hand-clasp with the left and right hands and sup-

port the sides of the middle fingers with the two forefingers: this is called

the seal of the Tathāgata’s armor.

“Bend the two ring fingers, place the two thumbs together, and insert

them in between the palms so that they press on the nails of the two ring

fingers: this is the seal of the Tathāgata’s tongue attribute. The mantra is: Namaḥ samantabuddhānāṃ, tathāgatajihva satyadharmapratiṣṭhita svāhā. (Homage to all Buddhas! O tongue of the Tathāgata! that which is established in the true Dharma! svāhā!) [170; cf. 20]

“With this seal, bend the forefingers and ring fingers together, turn the thumbs upward and bend them a little, place the middle fingers, standing straight, together, and do the same with the little fingers: this is called the seal of the Tathāgata’s speech gate (i.e., mouth). The mantra is: Namaḥ samantabuddhānāṃ, tathāgatamahāvaktra viśvajñānamahodaya svāhā. (Homage to all Buddhas! O great mouth of the Tathāgata! that which is preeminent in manifold knowledge! svāhā!) [171]

“With the previous seal as it is, bend the two forefingers and insert them in between the palms, facing upward: this is called the seal of the Tathāgata’s tusk. The mantra is: Namaḥ samantabuddhānāṃ, tathāgatadaṃṣṭra rasarasāgrasaṃprāpaka sarvatathāgataviṣayasaṃbhava svāhā. (Homage to all Buddhas! O tusk of the Tathāgata! that which effects the attainment of the foremost flavor among [all] flavors! that which is born from the sphere of all Tathāgatas! svāhā!) [172]

“Then, with the appearance of the previous seal as it is, turn the two forefingers upward, holding them there, and bend the third phalanges: this is called the seal of the Tathāgata’s eloquence. The mantra is: Namaḥ samantabuddhānāṃ, acintyādbhutarūpavācaṃ samatāprāpta viśuddhasvara svāhā. (Homage to all Buddhas! O you who have gained equality with speech of inconceivable and marvelous form! pure sound! svāhā!) [173]