Jñānasūtra (Ye Shes mDo) was born in the eastern city of Kamalashila in eastern India. His father was Shatihasta (Hand of Peace), and his mother was Kalyanachitta (Virtous Minded), in a shudra (lowest-caste) family. He became learned and went to Bodhgaya, where he lived with five hundred scholars. Among them was Vimalamitra, with whom his relations were very close because of their previous lives.
One day Jñānasūtra and Vimalamitra walked about two miles to the west of Bodhgaya. At that time, from the sky Vajrasattva Buddha appeared and proclaimed, "O sons of good family, you have each taken birth five hundred times as scholars, yet you have not attained Buddhahood. If you would like to attain the enlightenment of the dissolving of the defiled body in this very lifetime, go to the temple near the Bodhi Tree in China."
Vimalamitra went to China, received the oral transmissions of the Outer, Inner, and Esoteric cycles, and returned to India. He and Jñānasūtra met again on the outskirts of the city of Gache Kyi Tsal (Joyful Garden). Vimalamitra told Jnanasutra about his meeting with the master Shrisimha in China.
Then Jñānasūtra in turn went to China, reaching nine months' distance in a single day through his miraculous power. When he reached the temple near the Bodhi Tree in China, he met a beautiful girl who was carrying a vase filled with water. She instructed him to go to Tashi Trigo.
When he arrived at the giant, magnificent temple, a dakini instructed him to go to Siljin charnel ground. He went there and met the master Shirsimha in person in a temple of skulls. To please the master, he served him for three years. Then with offerings he beseeched him for teachings. Shrisimha taught him the teachngs of the oral transmission for nine years, Shrisimha withdrew the hidden texts from the temple near the Bodhi Tree and entrusted them to Jñānasūtra.
Then Jñānasūtra was satisfied and prepared to depart. Shrisimha asked hims, "Are you satisifed?" Jñānasūtra answered, "Yes, I am satisifed."
"The teachings have not yet been entrusted to you," said Shrisimha. Jñānasūtrathought, "There may be still more profound teachings," and he requested Shrisimha to confer them. Shrisimha answered, "It is neccessary to have empowerments," In the temple of Tashi Trigo he gave Jñānasūtra the complete elaborate empowerment, followed by the teachings on Innermost Esoteric cycle for three years. But he did not give him the texts, saying, "The texts will appear for you when the time comes." Then, in a deserted town, Shrisimha conferred on him the simple empowerment. When Jñānasūtra finished one year´s training on preparatory exercises on the experiences of samsara and nirvana on the peak of Mount Kosala, Shrisimha conferred on him the very simple empowerment teachings, and an extraordinary confidence was developed in Jñānasūtra. Then, after training for a month, Jñānasūtra was given the utmost simple empowerment, and he realized full control over his mind. Jñānasūtra stayed with Shrisimha for sixteen more years, training in meditation and observing the esoteric disciplines of the master. The master kept behaving in mysterious ways, wandering in charnel grounds, transforming himself into various forms, and mingling with dakinis and fearful beings without the slightest timidity.
Then the master was invited by King Paljin (Provider of Glory) of the country of Li and he went there, through the sky, riding a white lion, sitting in a silk tent under three layers of parasols, held up by six powerful young yakshas. The morning of the seventh day after his departure, a loud noise was heard in the sky. Jñānasūtra looked in the sky and saw the master seated in the midst of a mass of light. Jñānasūtraa realized that the mortal body of the master had dissolved. Jñānasūtra offered prayers, and into his hand fell the testament, Zerbu Dunma (The Seven Nails).
Shrisimha also gave him this prophetic instruction: "The texts of the Inner Esoteric teachings, the Nyingthig, are concealed in a pillar of Tashi Trigo. Take them and go to Bhasing charnel ground." Then Jñānasūtra withdrew the texts and went to the most beautiful, fearful, and powerful Bhasing charnel ground, which is situated far to the east of Bodhgaya. While Jñānasūtra was saying there performing esoteric exercises and giving teachings to dakinis, Vimalamitra, who was also doing esoteric practices, received a prophecy from a dakini and came to see Jñānasūtra. Jñānasūtra gave him the elaborate, simple, very simple, and utmost simple empowerments and teachings, and he also entrusted him with the texts.
At the end of his life Jñānasūtra attained the dissolution of the mortal body, and when Vimalamitra uttered the prayer of lamentationm Jñānasūtra appeared and conferred on him his testament, Zhakthap Zhipa (The Four Methods of Contemplation). It includes these lines:
Homage to the primoridially pure emptiness. . .
Wonderful! If you train in these, joy will arise naturally.
If you wish to attain the state of great equalness, gain experience
[in the follwing contemplations] all the time.
[a] If you wish to be trained in all the esoteric "activities,"
maintain all the appearances in the directness (Cher) of natural contemplation.
[b] If you wish to gain strenght in your "meditation," remain in
the union of mind and matter through the view of oceanlike
[c] If you wish to attain self-liberation from all the "views" [concepts],
bring all the existents to their cessation through the
mountainlike natural contemplation.
[d] If you wish to attain all the "results," as they are, liberate all
the errors in the training through the mountainlike view.
This biography is from Masters of Meditation and Miracles.