It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) was standing near the door of Sayyidah Aisha (may Allah be pleased with her). The Prophet (peace and blessings be upon him) pointed with his hand towards the east and said: "Here are the tribulations, from where the horn of Satan will emerge."
(Second chain) Sayyiduna Ibn Umar (may Allah be pleased with him) says: I saw the Messenger of Allah (peace and blessings be upon him) point towards the east and say: Beware! Indeed, tribulations will be here. Beware! Surely, tribulations will be in this direction. Beware! Tribulations will be here, from where the horn of Satan will rise.
(Third chain) Sayyiduna Ibn Umar (may Allah be pleased with him) says: I saw the Messenger of Allah (peace and blessings be upon him) gesture, his intention was towards Iraq, then he said: Beware! The tribulations are here, beware! The tribulations are here, (he repeated this three times), from where the horn of Satan will emerge.
(Fourth chain) The Messenger of Allah, peace and blessings be upon him, came out from the house of Lady Aisha, may Allah be pleased with her, and said: The center of disbelief is here, from where the horn of Satan will emerge.