81. Those who were left behind rejoiced in their inaction behind the back of the messenger of Allah, they hated to strive and fight with their goods and their persons in the cause of Allah, they said, "Go not forth in the heat." Say, "The fire of hell is fiercer in heat." If they only could understand!
82. Let them laugh a little, much will they weep: a recompense for that that they do.
83. If then Allah brings you back to any one of them and they ask your permission to come out, say, "Never shall you come out with me, nor fight an enemy with me, for you preferred to sit inactive on the first occasion, then sit you with those who lag behind."
84. Nor do you ever pray for any one of them that dies, nor stand at his grave, for they rejected Allah and God's messenger, and died in a state of perverse rebellion.
(The Repentance 9:81-84)