Imam Muhammad al-Baqir (may Allah have mercy on him) narrates from his father, from his grandfather Husayn bin Ali (may Allah be pleased with him), that at the time of his death the Messenger of Allah (peace and blessings be upon him) gave instructions about three things: first, that the army of Usamah be dispatched; and second, that no one should live with him (peace and blessings be upon him) in Madinah except the people of his religion (that is, the Muslims). Muhammad al-Baqir said: And I have forgotten the third.
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2878