He left no direct transmissions; all his knowledge was passed on to his disciples, who wrote it down or passed it on orally after his death.
He preached his teachings while traveling through northern India. At first, he mainly transmitted the teachings of Theravada (the longest-established Buddhist school among the early Buddhist schools, and its teachers derived their teachings directly from the Buddha), which were used to free oneself from one's suffering. The Great Way teachings, which emphasize the importance of wisdom and compassion to help oneself and others, are based on them. Finally, the Buddha gave the Vajrayana teachings (related to the practice of tantras), recognizing the nature of the mind.
