It is narrated from Sayyida Umm Salama (may Allah be pleased with her): Once, the Messenger of Allah (peace and blessings be upon him and his family) was lying in my house, when suddenly he quickly sat up and began to recite: "Indeed, to Allah we belong and to Him we shall return." I said: O Messenger of Allah! May my parents be sacrificed for you, what has happened that you are reciting "Indeed, to Allah we belong and to Him we shall return"? He replied: A group from my Ummah will come from the direction of Syria; they will come to confront a man who will be protected by Allah Almighty. When this group reaches the plain of Bayda near Dhul-Hulaifa, all the people included in it will be swallowed up by the earth, but their resurrection from the earth will be in different ways. I said: O Messenger of Allah! How will it be that all the people will be swallowed up, but their resurrection from the earth will be different from each other? He replied: Among them will be some people who will have been compelled, among them will be some people who will have been compelled. The Prophet (peace and blessings be upon him and his family) repeated this sentence three times.