God the Almighty says: the heretics indeed are the people who are pleased to have the gains of this world and they are contented with them that they do not feel the urge to make a move towards God. The verse ‘fala noqeemo lahum yaumal qiyamati wazna’, does not mention sin because these are the people who gave all the preference to the worldly desires. At another place God the Almighty says: these people have got the full enjoyment of this world; there also it is not the sin that has been mentioned rather it is pleasure of this world which ordinarily are made lawful by God. These people who have been called heretics got themselves engrossed in the acquisition of these pleasures. This type of people will have no worth in the eyes of God Almighty nor will they be honoured. A luxurious life is indeed a Satan which decimes a man. So far as the behaviour is concerned he himself runs after the hardships. Were he to make compromises he would live a life of comforts. If the Holy Prophet (sallallaho alaihi wa sallam) had done this there would have been no need for him to go to (through hardships of) battlefields but he gave preference to religion over the worldly affairs and therefore all the people turned into his enemies.
(Malfoozat vol. 7, pg 108)