Gautama is the primary figure in Buddhism. He is believed by Buddhists to be an enlightened teacher who attained full Buddhahood and shared his insights to help sentient beings end rebirth and suffering. Accounts of his life, discourses, and monastic rules are believed by Buddhists to have been summarised after his death and memorized by his followers. Various collections of teachings attributed to him were passed down by oral tradition and first committed to writing about 400 years later. In Vaishnava Hinduism, the historical Buddha is considered to be an avatar of the Hindu god Vishnu.