He then looked at the faces of the demons; those who had cheated him, he tore apart. He uttered the Main Incantation[r_1:14] of Hayagriva[r_1:15] and wielded his mental power of Thunderbolt Holder (Vajrahetu) to cut the demons into pieces and to put all the demons who had damaged the Buddhist religion into the Fire Sacrifice as an offering to be burned. The troublemakers and those who had impeded the cause of Dharma--these he made living sacrificial food

for the scorpions. As for all those who afflicted the servants of the temple, he used his Wheel to cut them up and his weapons to chop them into pieces. All the sinful demons who had harmed sentient beings became food for the scorpions. Thus he subdued all the Eight Divisions of Demons. He bound them to the precepts, admonished them not to harm any Buddhist and not to incite any kind of trouble. He also ordered them to assist the servants of the temples: on the tenth of every month, they should come before the Fierce Guru and attend the Congregation of the Sacred Offering[r_1:16], help to set in motion the Wheel of Dharma; and for the benefit of sentient beings they should fight against those demons who make harm.

The Fierce Guru then said:

"Oh! you pitiful demons! Now, I safeguard you.
Though you are the lokas of Ghost,
Eventually you will all become the Great Blissful Body;
You will all become the perfect Buddha."

This is stated in the Tantra of the Blood-Drinking Wrathful One, Drag-b'o-g'rag-atung-rol-b'ah-rgyud. Though there are many different Treasures [sacred or revealed books] and lineages of the teaching of the Fierce Guru, this one belongs to the Whisper Succession of the Heavenly Dharma Treasury.

As said in the Sutra of the Fountain of the Noble Dharma:

"The Bodhisattvas, the perfect Bodhisattvas, are able to procure abundant hidden teachings from the walls, woods, caves, and from Heaven Circles, even at a time when Buddha is no longer in the world."

The Incarnation of Buddha [in the Tibetan youth] Mi-gyur-rdo-rje was a demon-subduer; this was prophesied in many Treasury Dharmas. When he was thirteen years old,

in the Black month of the Fowl year, he saw the Fierce Guru appear in the forest many times. The Fierce Guru himself conferred the Tantra instructions and practice, together with the various teachings necessary to the Incarnation of Buddha. Therefore this teaching has the advantage of being a near-succession one[r_1:17] and of possessing an unusual benevolent power (grace). In comparison with other teachings, the teaching of the Fierce Guru is an easier and faster way to attain the Siddhis (yogic accomplishments) and Signs[r_1:18], as said in the Tantra of the Fierce Act (Drag-b'o prang-lashi-rgyud):