Musnad Abi Ya'la 6937 — once, while the Messenger of Allah ﷺ was lying

It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that once, while the Messenger of Allah (peace and blessings be upon him) was lying down in my house, he suddenly drew himself up (startled) and sat up, reciting 'Inna lillahi wa inna ilayhi raji'un' (Indeed we belong to Allah and to Him we shall return). I said: May my father and mother be ransomed for you, what is the matter that you are saying the words of return to Allah? He (peace and blessings be upon him) said: "(I am troubled) because of an army from my Ummah that will come from the direction of al-Sham and will head for a man (taking refuge at) the House of Allah. Allah Almighty will protect that man from them, until, when that army reaches al-Bayda' near Dhu al-Hulayfah, all of them will be swallowed up by the earth, although their aims and conditions (in setting out) will be different." I said: May my father be ransomed for you, how will all of them be swallowed up together when their intentions and reasons are different? He (peace and blessings be upon him) said (three times): "Among them will be some who were forced (to go along), among them will be some who were forced, among them will be some who were forced."