Sudarshana (Skt. Sudarśana; Tib. ལེགས་མཐོང་ , Wyl. legs mthong) was entrusted with the teachings of the Buddha by Krishna, the sixth patriarch. Like Krishna, he also made efforts to end animal sacrifices and tamed wild places in the west of India. He travelled extensively to the south, even to island kingdoms, as well as in the north along the borders of China. After Sudarshana's passing, as the Dharma spread across India and Asia, the Sangha was led by various convocations of arhats and other realized masters.
- Ways of Enlightenment, Dharma Publishing, pages 39-40.
- Ways of Enlightenment; Buddhist Studies at Nyingma Institute, pages 38-40. Dharma Publishing ISBN: 0-89800-255-9
- Dudjom Rinpoche, The Nyingma School of Tibetan Buddhism, The Patriarchs of the Teachings, pp.432-439. Published by Wisdom Publications ISBN: 0-86171-199-9