" He sat down in front of the Bo tree and vowed not to rise until he reached enlightenment. He sat at the tree for forty-nine days until he reached enlightenment. This led the Buddha to his six rejections of Hinduism.
The Buddha's six rejections of the Hindu religion were authority, ritual, speculation, tradition, grace and mystery. He was able to reject the Hindu's belief in the established religion by showing how all these got in the way of enlightenment. Instead of helping the individual towards enlightenment they were distractions and could lead to falling off of the path. Buddha preached about a religion devoid of ritual. He mocked the rigmarole of the Brahmnic rites. He clamed that they were the trappings and irrelevant, and they could bind the human spirit .
He avoided speculation. Another great change was that of tradition. This flew completely in the face of Hinduism. He encouraged his follower's to "slip free from the past's burdens." He showed this in effect by quitting Sanskrit and teaching in the language of the people. He believed tradition was bad and added to loss and suffering and he encouraged his followers to reject it. This is what allowed Buddhism to be able to expand into other countries and be translated into any language.
Buddha's stance on grace was that it was up to the individual to make out their won salvation. He believed that no matter what your caste, you had the ability for enlightenment in this lifetime. He felt it was ridiculous that only the brahmins could attain enlightenment. His rejection of the caste system was huge in his rejection of Hinduism. He did not want his followers to pray to him after he died. "He wanted them to know for themselves and realize the supreme religion and goal." .
There is no supernatural in the religion the Buddha preached. He felt that it led to shortcuts and that there are no easy answers or simple solutions. He knew that the supernatural could lead to danger and that it would lead men off of the path to enlightenment.