Sutra of the Wheel of Dharma
The Sūtra of the Wheel of Dharma (Skt. Dharmacakrasūtra; Tib. ཆོས་ཀྱི་འཁོར་ལོའི་མདོ།; Wyl. chos kyi ‘khor lo’i mdo). This is Buddha’s first teaching, which he gave to his five former spiritual companions, on the four truths that he had discovered as part of his awakening.
Dergé Kangyur, vol. 72, folios 275.a-277.a.