“Now I will relate the history of this tantra.

“When the Bhagavat was about to attain awakening, a great army of māras approached, displaying fearsome terrors in order to interfere with the awakening of the blessed Great Sage. At that time, the Bhagavat entered the meditative absorption called victory over great māras and emanated the wrathful great Yamāri from the vajras of his body, speech, and mind. Once emanated, the King of Sages gave this command to Vajrapāṇi:

“Vajrapāṇi! Assume this form of the wrathful Yamāri and destroy, bind, and kill the māras, nāgas, yakṣas, asuras, and devas!”

The great Lord of the Guhyakas, the head of the vajra family, and father of Nalakūbera, then said:

“At that time, I heard the words of the Bhagavat, instantly grasped and understood the meaning, compiled it, and took it to heart.”

This was the eighteenth chapter of the Tantra of Black Yamāri, which was extracted from the King of Tantras in seven hundred thousand lines and revealed in the land of Oḍḍiyāna, and which produces all siddhis.

The Tantra of Black Yamāri, the Body, Speech, and Mind of all Tathāgatas, is complete.

This was translated, edited, and finalized by the great Indian preceptor Dīpaṅkaraśrījñāna and the Tibetan translator, the monk Tsültrim Gyalwa. Later, the translation was revised by the monk and translator Darma Drak, and then again by the monk Dorjé Drak.