It is narrated from Hazrat Umm Sharik (may Allah be pleased with her) that she heard the Prophet (peace and blessings be upon him) say: "A time will certainly come when people will flee from the Dajjal and take refuge in the mountains." Hazrat Umm Sharik (may Allah be pleased with her) asked: "O Messenger of Allah! Where will the Arabs be on that day?" The Prophet (peace and blessings be upon him) replied: "They will be very few."
Hadith Referenceمسند احمد / من مسند القبائل / 27620