Hassan Al Basree رحمه الله said:
“We
laugh and yet – who knows? – perhaps Allaah has looked at some of our works and
said: “I will not accept anything from you.” Woe to you, son of Aadam! Can you
fight Allaah? Whoever disobeys Allaah is fighting Him. By Allaah! I have met
seventy veterans of Badr. Most of their garments were wool. Had you seen them
you would have said they are crazy, and had they seen the best among you they
would have said: “Those people will have no part in the Hereafter.”