The Philosophy of the Teachings of Islam — Page 147
That is, the desire of increase in worldly possessions beguiles you till you reach the graves. Do not set your hearts upon the world. You will soon come to know the vanity of your pursuits; I say again, you will soon come to know how mistaken you are in pursuing the world. If you had possessed the certainty of knowledge you would surely see hell in this very life. But you will see it with the certainty of sight in your middle state (Barzakh), then you shall be called to account on the Day of Judgement and the torment will be imposed on you and you will know hell through your experience. Three Types of Knowledge 141 In these verses God Almighty has clearly set forth that for the wicked the life of hell begins in a covert way in this very world, and if they would reflect they would observe hell in this very life. Here God Almighty has indicated three types of knowledge, namely knowledge by certainty of reason, knowledge by certainty of sight, 189. Mutual rivalry in seeking worldly increase diverts you from God. Till you reach the graves. Nay! you will soon come to know. Nay again! you will soon come to know. Nay! if you only knew with certain knowledge, You will surely see Hell in this very life. Aye, you will surely see it with the eye of certainty. Then, on that day you shall be called to account about the worldly favours. (The Holy Quran, at-Takathur 102:2-9)