It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that once the Noble Prophet (peace and blessings be upon him) came out from the chamber of Sayyidah Aisha (may Allah be pleased with her). He (peace and blessings be upon him) pointed towards the east with his hand and said: "The trial will emerge from here, from where the horn of Satan will appear."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 4802
Hadith Gradingحکم دارالسلام:صحيح، م:2905، وهذا إسناد حسن من أجل عكرمة بن عمار