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Renunciation

While the earliest sources merely depict Gotama seeking a higher spiritual goal and becoming an ascetic or śramaṇa after being disillusioned with lay life, the later legendary biographies tell a more elaborate dramatic story about how he became a mendicant.

The earliest accounts of the Buddha's spiritual quest is found in texts such as the Pali Ariyapariyesanā-sutta ("The discourse on the noble quest", MN 26) and its Chinese parallel at MĀ 204. These texts report that what led to Gautama's renunciation was the thought that his life was subject to old age, disease and death and that there might be something better. The early texts also depict the Buddha's explanation for becoming a sramana as follows: "The household life, this place of impurity, is narrow – the samana life is the free open air. It is not easy for a householder to lead the perfected, utterly pure and perfect holy life." MN 26, MĀ 204, the Dharmaguptaka Vinaya and the Mahāvastu all agree that his mother and father opposed his decision and "wept with tearful faces" when he decided to leave.

Legendary biographies also tell the story of how Gautama left his palace to see the outside world for the first time and how he was shocked by his encounter with human suffering. These depict Gautama's father as shielding him from religious teachings and from knowledge of human suffering, so that he would become a great king instead of a great religious leader. In the Nidanakatha (5th century CE), Gautama is said to have seen an old man. When his charioteer Chandaka explained to him that all people grew old, the prince went on further trips beyond the palace. On these he encountered a diseased man, a decaying corpse, and an ascetic that inspired him. This story of the " four sights " seems to be adapted from an earlier account in the Digha Nikaya (DN 14.2) which instead depicts the young life of a previous Buddha, Vipassi.

The legendary biographies depict Gautama's departure from his palace as follows. Shortly after seeing the four sights, Gautama woke up at night and saw his female servants lying in unattractive, corpse-like poses, which shocked him. Therefore, he discovered what he would later understand more deeply during his enlightenment: dukkha ("standing unstable", "dissatisfaction") and the end of dukkha. Moved by all the things he had experienced, he decided to leave the palace in the middle of the night against the will of his father, to live the life of a wandering ascetic.

Accompanied by Chandaka and riding his horse Kanthaka, Gautama leaves the palace, leaving behind his son Rahula and Yaśodhara. He travelled to the river Anomiya, and cut off his hair. Leaving his servant and horse behind, he journeyed into the woods and changed into monk's robes there, though in some other versions of the story, he received the robes from a Brahma deity at Anomiya.

According to the legendary biographies, when the ascetic Gautama first went to Rajagaha (present-day Rajgir) to beg for alms in the streets, King Bimbisara of Magadha learned of his quest, and offered him a share of his kingdom. Gautama rejected the offer but promised to visit his kingdom first, upon attaining enlightenment.