Only those are believers who believe in Allah and his Messenger, and when they are with him on a momentous affair, they go not away until they have asked leave of him. Surely they who ask leave of thee, are they who believe in Allah and His Messenger; so when they ask leave of thee for some affair of theirs, give leave to whom thou wilt of them, and ask forgiveness for them from Allah. Surely Allah is Forgiving, Merciful.