Ask forgiveness for them, [O Muḥammad], or do not ask forgiveness for them. If you should ask forgiveness for them seventy times - never will Allāh forgive them. That is because they disbelieved in Allāh and His Messenger, and Allāh does not guide the defiantly disobedient people.
Those who remained behind rejoiced in their staying [at home] after [the departure of] the Messenger of Allāh and disliked to strive with their wealth and their lives in the cause of Allāh and said, "Do not go forth in the heat." Say, "The fire of Hell is more intense in heat" - if they would but understand.
If Allāh should return you to a faction of them [after the expedition] and then they ask your permission to go out [to battle], say, "You will not go out with me, ever, and you will never fight with me an enemy. Indeed, you were satisfied with sitting [at home] the first time, so sit [now] with those who stay behind."