HISTORY AND BACKGROUND
The Lelung Cycle of Teachings originated with Amitabha Buddha's three manifestations: as Avalokiteshvara to subdue the males of this world; as dPal gar gyi dBang Phyug gSang ba Ye She to subdue the females; and as the Great Glorious Heyagriva to subdue the furious beings. Out of these three manifestations the second one is known as the Lelung Cycle of Teachings.
The Fifth Lelung Rinpoche, Pema Zhepai Dorje, rediscovered the Lelung Cycle from some Hidden Treasure Teachings (Terma) of Guru Padmasambhava. His discovery accorded with the prophesy of the great master Choeje Lingpa, who was considered the emissary of Guru Padmasambhava in this world and the fountainhead of Nyingma school of Tibetan Buddhism. Choeje Lingpa was the founder of Ogyen Mindroling Monastery and a special terton of the Great Fifth Dalai Lama.
In Choeje Lingpa's Shawu Takgo'i Terlung (Prophecy of Shawu Takgo Terma) it is said that the Fifth Lelung Rinppoche would be the Lord Master of the Sangwa Yeshe cycle of teachings. Accordingly, he upheld, preserved and promoted these teachings and composed necessary supplementary texts. He spread the teachigns far and wide, thereby leading sentient beings on the path to Enlightenment.
The Fifth Lelung Rinpoche is also responsible for many other teachings, including The Oceans of Lamas, The Oceans of Yidams and The Oceans of Dharma Protectors. All of these teachings have authentic scriptural sources and are supported by profound, logical reasoning. They are written with fluency and their subject matter is vast and profound. They are of middling length and suitable to catch the interest of disciples.
Especially since they contain pith (or direct) instructions from the profound terma teachings and because they retain the "fresh, warm breath of dakinis", many great Nyingma masters make these teachings their main practice. These teachings are outstanding and unmatched by works of other teachers.