Musannaf Ibn Abi Shayba 13:2424

Abu Bakr narrated to us, he said: Jarir narrated to us, from Layth, from Abu Bakr ibn Hafs, who attributed it (marfu') to the Prophet, he said: "Whoever revives a piece of rugged land from the territory (of the Muslims), then he has its ownership, along with whatever reward he attains from it."