Only they are believers who believe in God and His Messenger and who when they are with him namely the Messenger in a collective affair such as during the Friday sermon do not leave when they have an excuse until they have asked leave of him. Truly those who ask leave of you — it is they who believe in God and His Messenger. So when they ask leave of you for some affair some matter of theirs give permission to whom you will of them to leave and ask God to forgive them. Truly God is Forgiving Merciful.