Narrated by Sayyiduna Abu Malik Ash'ari (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The greatest betrayal in the sight of Allah Almighty is a hand-span of land, and that is when two men are partners in a piece of land or a house, but one of them unjustly takes control of a hand-span from his companion’s share. When he seizes it, he will be made to wear a collar of seven earths around his neck until the Day of Resurrection.