Some non-Buddhists in India follow asceticism strictly, forsaking food, clothes, bath, etc. They believe liberation can be attained through physical austerity. Others suggest that practitioners must jump into five fires—fires in the four directions plus the sun—to attain liberation after the body has been burned down. In Hetuvidya,1 the view of a non- Buddhist school was mentioned, which posited that both physical and mental phenomena are the causes of samsara. When one of them is destroyed, freedom from samsara may then be possible.
~Depicted from THE RIGHT VIEW - A Buddhist’s Mode of Life
