Abu Salamah narrated that there was a dispute over land between him and some other people. He mentioned this to Aisha (may Allah be pleased with her), so she said: "Abu Salamah! Avoid (taking) land, for the Prophet (peace and blessings of Allah be upon him) said: If a person takes even a span of land unjustly from someone else, a collar of seven earths will be placed around his neck on the Day of Resurrection."