This sermon is an important part of Buddhist history and is known as the Dhammacakkappavattana Sutta, or the Setting in Motion of the Wheel of Dharma. It was given by the Buddha to his first five disciples shortly after his enlightenment. In this sermon, the
From Wikipedia
The Buddha Preaching his First Sermon is a stone sculpture of the 5th-century CE showing Gautama Buddha in the "teaching posture" or dharmachakra pravartana mudrā. The relief is 160 cm tall, and was excavated at Sarnath, India by F. O. Oertel during the 1904–1905 excavation season of the Archaeological Survey of India (ASI); it was found in an area to the south of the Dhamek Stupa.