It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "What is the matter with people who honour those living in luxury and look down upon the worshippers, and who act upon the Qur'an only as far as it agrees with their desires, and abandon whatever goes against their desires? In this way they believe in some (of its commands) and reject others. They strive for what is attained even without striving, namely the decreed destiny, the appointed term and the allotted provision; and they do not strive for what is not attained except by striving, namely the abundant reward, the appreciated effort (accepted by Allah), and the trade that never perishes."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10394