THE SUTRAS are mostly discourses given by Buddha or one of his closest disciples.
They are written texts in which are exposed teachings and precepts related to the different ways of knowledge to achieve the “enlightenment” or complete spiritual realization of the human being. Several centuries after the death of Buddha and his teachings were not lost in oral transmission, his followers transcribe them in the form of sutras.
The best known are the Lotus Sutra, the Garland Sutra, the Diamond Sutra and the Heart Sutra.
All Buddhists agree that the first and original turn of the Wheel of Dharma occurred when Buddha taught to the five wise ascetics who would become his first disciples in the Deer Park in Sarnath.
All the sutras -even those that did not come out of Buddha’s mouth- are considered buddha vachana (‘Buddha’s Word’).