If his father had no brothers, then everything he owns should be given to the closest relative in his family. This should be a law among the people of Israel. The Lord gives this command to Moses.’”
“Then it happened just as the Lord said. My cousin Hanamel came to me in the courtyard of the guard. Hanamel said to me, ‘Jeremiah, buy my field near the town of Anathoth, in the land of the family group of Benjamin. Buy that land for yourself because it is your right to buy it and own it.’”
A person in your country might become very poor. He might be so poor that he must sell his property. So his close relative must come and buy back the property for his relative.
Or his uncle or his cousin can buy him back. Or one of his close relatives from his family can buy him back. Or if the person gets enough money, he can pay the money himself {and become free again}.