On one occasion, Sayyiduna Ali (may Allah be pleased with him) said: We have nothing except the Book of Allah and this scroll. In this scroll, it is also written that the Messenger of Allah (peace and blessings be upon him) said: "From 'Ir to Thawr, Madinah Munawwarah is a sanctuary. Whoever introduces an innovation in it or gives refuge to an innovator, upon him is the curse of Allah, the angels, and all people. On the Day of Resurrection, Allah will not accept any obligatory or voluntary act of worship from him. And the responsibility of all Muslims is the same; whoever breaks the protection of a Muslim, upon him is the curse of Allah, the angels, and all people, and none of his obligatory or voluntary acts will be accepted. And if a slave starts calling someone other than his master as his master, upon him is the curse of Allah, the angels, and all people, and on the Day of Resurrection, none of his obligatory or voluntary acts will be accepted."