"Those who were left behind were glad on account of their sitting behind Allah's Messenger, and they were averse to striving in Allah's way with their property and their persons, and said: Go not forth in the heat. Say: The Fire of hell is fiercer in heat. If only they could understand! Then let them laugh a little and weep much a recompense for what they earned. So if Allah bring thee back to a party of them, then they ask thy permission to go forth, say: Never shall you go forth with me and never shall you fight an enemy with me. You chose to sit (at home) the first time so sit (now) with those who remain behind. And never offer prayer for any one of them who dies, nor stand by his grave. Surely they disbelieved in Allah and His Messenger and they died in transgression."