Nyingtig Yabshi. One of the most famous collections of Dzogchen

Dzogchen

According to Tibetan Buddhism and Bön, Dzogchen is the natural, primordial state or natural condition of the mind, and a body of teachings and meditation practices aimed at realizing that condition. Dzogchen, or "Great Perfection", is a central teaching of the Nyingma school also practiced by...

 scriptures. Vimalamitra

Vimalamitra

Vimalamitra ), an 8th century Indian adept, is key to the history of Tibetan Buddhist Dzogchen practice. He lived equally in China, Oddiyana and Tibet, but was known as the "Sage of Kashmir". According to tradition, he was born in Western India and travelled to China to become a disciple of Shri...

 united the two aspects of Innermost Unexcelled Section — the explanatory lineage with scriptures and the hearing lineage without scriptures — and concealed them to be revealed as the Nyingtig teachings Vima Nyingtig, and also as the Secret Heart Essence of Vimalamitra (bi ma'i gsang ba snying thig). Longchenpa

Longchenpa

Longchen Rabjampa, Drimé Özer "Longchenpa" was a major teacher in the Nyingma school of Tibetan Buddhism. Along with Sakya Pandita and Je Tsongkhapa, he is commonly recognized as one of the three main manifestations of Manjushri to have taught in Central Tibet...

 clarified them in his 51 sections of Lama Yangtig. Padmakara

Padmasambhava

Padmasambhava ; Mongolian ловон Бадмажунай, lovon Badmajunai, , Means The Lotus-Born, was a sage guru from Oddiyāna who is said to have transmitted Vajrayana Buddhism to Bhutan and Tibet and neighbouring countries in the 8th century...

 concealed his teachings on the Innermost Unexcelled Cycle to be revealed in the future as Khandro Nyingtig, the Heart Essence of the Dakinis. Longchenpa also clarified these teachings in his Khandro Yangtig. These four exceptional sets of Dzogchen instructions are, together with Longchenpa's additional teachings Zabmo Yangtig, contained in his collection, Nyingtig Yabshi.