Those who believed, and emigrated, and struggled in Allah’s cause with their possessions and their persons, and those who provided shelter and support—these are allies of one another. As for those who believed, but did not emigrate, you owe them no protection, until they have emigrated. But if they ask you for help in religion, you must come to their aid, except against a people with whom you have a treaty. Allah is Seeing of what you do.