Sayyiduna Umar (may Allah be pleased with him) said: O people! the Messenger of Allah (peace and blessings be upon him) made an agreement with the Jews on the condition: "We will expel them whenever we wish." So whoever has any property, let him take charge of it, for I am expelling the Jews. Then he expelled them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17981