The Markandeya Purana says King Harishchandra gave the whole earth to a Brahmin sage, then sold his wife, his son and himself to pay the fee

The Markandeya Purana says Harishchandra was a just king in the Treta Age. Having angered the sage Vishvamitra, he offered him anything he wanted. Vishvamitra asked for the fee of the royal sacrifice: "this earth," the kingdom with its chariots, horses and elephants, the treasury, and everything else, except the king's wife, son and body. The king agreed. Vishvamitra then ordered him to leave the realm in clothes of bark with his wife Shaivya and his son. On the road he stopped them and demanded the fee again, saying a promise unfulfilled to Brahmins brings harm. With nothing left, Harishchandra went to Benares. He sold his wife and son to a Brahmin and himself to a chandala, an outcaste, and gave Vishvamitra the price. He worked a year at the cremation ground. His son Rohitashva died of a snakebite, and his wife brought the body to the burning ground. They recognised each other and prepared to die on the boy's pyre. The gods stopped them. Dharma revealed that he had been the chandala, the boy was restored to life, and the king went to heaven with his people. Harishchandra Ghat in Varanasi bears his name, and India's first feature film, Raja Harishchandra (1913), told his story.