Qur'an, Saba', Surah 34:34-36
‘Whenever God has sent an apostle to a city or nation, the wealthy people of that place, living in comfort, have rejected the apostle’s message. They have said to themselves: ‘We have more wealth and more children than those who believe the apostle’s message. That shows that we shall not punished.’ But I say that God gives abundantly to some, and sparingly to others, as he pleases; but most people do not understand this.