Ascetic Sumedha and Dipankara Buddha

Gautama Buddha (also known as Shakyamuni) in a former incarnation known as Sumedha, a rich Brahmin turned hermit kneeling and laying his long black hair on the ground, in an act of piety that the Dīpankara Buddha could cross a puddle of mud without soiling his feet. This story between Dīpankara Buddha and Shakyamuni, occurred many lifetimes before Shakyamuni’s eventual enlightenment. From this act, Dīpankara told Sumedha “In the ages of the future you will come to be a Buddha called ‘Shakyamuni'”, to which Sumedha replied, “I am to become a Buddha, awakened to enlightenment; may you tread with your feet on my hair – on my birth, old age, and death.” Dīpankara Buddha then said, “Freed from human existence, you will become an effective teacher, for the sake of the world. Born among the Shakyas, as the epitome of the Triple World, the Lamp of all Beings, you will be known as Gautama. You will be the son of King Suddhodana and Queen Maya. Shariputta and Moggallana will be your chief disciples. Your caretaker will name as Ananda.”

Source: Sumedha Buddhmission