Only those are believers who believe in God and His Apostle, and when they are with Him upon public business go not away until they have asked his leave; verily, those who ask thy leave they it is who believe in God and His Apostle. But when they ask thy leave for any of their own concerns, then give leave to whomsoever thou wilt of them, and ask pardon for them of God; verily, God is forgiving and merciful.