It is narrated from Umar bin Khattab (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "If I remain alive, then, insha’Allah, I will expel the Jews and Christians from the Arabian Peninsula."
Hadith Referenceسنن ترمذي / كتاب السير عن رسول الله صلى الله عليه وسلم / 1606