The Kagyu school, also transliterated as Kagyü, or Kagyud, which translates to "Oral Lineage" or "Whispered Transmission" school, is one of the main schools (chos lugs) of Tibetan (or Himalayan) Buddhism. The Kagyu lineages trace themselves back to the 11th century Indian Mahasiddhas Naropa, Maitripa and the yogini Niguma, via their student Marpa Lotsawa (1012–1097), who brought their teachings to Tibet. Marpa's student Milarepa was also an influential poet and teacher.
The Tibetan Kagyu tradition gave rise to a large number of independent sub-schools and lineages. The principal Kagyu lineages existing today as independent schools are those which stem from Milarepa's disciple, Gampopa (1079–1153), a monk who merged the Kagyu lineage with the Kadam tradition.[1] The Kagyu schools which survive as independent institutions are mainly the Karma Kagyu, Drikung Kagyu, Drukpa Lineage and the Taklung Kagyu. The Karma Kagyu school is the largest of the sub-schools, and is headed by the Karmapa. Other lineages of Kagyu teachings, such as the Shangpa Kagyu, are preserved in other schools.
The main teachings of the Kagyus include Mahamudra and the Six Dharmas of Naropa.
Strictly speaking, the term bka' brgyud "oral lineage", "precept transmission" applies to any line of transmission of an esoteric teaching from teacher to disciple. There are references to the "Atiśa kagyu" for the Kadam or to "Jonang kagyu" for the Jonang and "Ganden kagyu" for the Gelug sects. Today, however, the term Kagyu almost always refers to the Dagpo Kagyu and, less often, to the Shangpa Kagyu.
In his 1970 article Golden Rosaries of the Bka' brgyud schools, E. Gene Smith discusses the two forms of the name, and :
One source indicates:
Kagyu begins in Tibet with Marpa Lotsawa (1012–1097) a Tibetan householder who trained as a translator with lotsawa Drogmi Shākya Yeshe (993–1050), and then traveled three times to India and four times to Nepal in search of religious teachings. His principal gurus were the siddhas Nāropa - from whom he received the "close lineage" of mahāmudrā and tantric teachings, and Maitrīpāda - from whom he received the "distant lineage" of mahāmudrā.
Together Marpa, Milarepa and Gampopa are known as "Mar-Mi-Dag Sum" and together these three are considered the founders of the Kagyu school of Buddhism in Tibet.
Marpa's guru Nāropa (1016–1100) was the principal disciple of Tilopa (988-1089) from East Bengal. From his own teachers Tilopa received the Four Lineages of Instructions (