1. The Eight-fold Path (Arya Ashtanga Marga) is a fundamental concept in Buddhism, outlining the path to liberation from suffering (Nirvana).
2. This concept forms the central theme of the Buddha's first sermon, delivered at Sarnath after attaining enlightenment.
3. This first sermon is recorded in the Dharma Chakara Pravartana Sutta (Pali: Dhammacakkappavattana Sutta), which means "The Discourse on Setting the Wheel of Dhamma in Motion."
4. Other texts mentioned are also important Buddhist scriptures: Dipavamsa (Sri Lankan chronicle), Divyavadana (collection of Mahayana Buddhist narratives), and Mahaparinibban Sutta (recounts the end of Buddha's life).