Hadith 17255
It is narrated from Hazrat Abu Malik Ashja'i (may Allah be pleased with him) that the Noble Prophet, the Leader of both worlds (peace and blessings be upon him) said: The greatest betrayal in the sight of Allah is betrayal in a span of land. You see that two men are neighbors in a piece of land or a house, yet one of them unjustly takes a span from his companion's share. On the Day of Resurrection, the one who does this will have a collar made from that portion out of the seven earths placed around his neck.