Man's nature is made up of four elements, which produce in him four attributes, namely, the beastly, the brutal, the satanic, and the divine. In man there is something of the pig, the dog, the devil, and the saint.
Remember your contemporaries who have passed away and were your age. Remember the honors and fame they earned, the high posts they held, and the beautiful bodies they possessed. Today all of them are turned to dust. They have left orphans and widows behind them, their wealth is being wasted, and their houses turned into ruins.
No sign of them is left today, and they lie in dark holes underneath the earth.
Picture their faces before your mind's eye and ponder.
Understand that for every rule which I have mentioned from the Quran, the Devil has one to match it, which he puts beside the proper rule to cause error.
When you have a bad suspicion about a Muslim in your heart, you should increase your consideration toward him and make dua for him. This way you will infuriate Satan and will be able to drive him away. Because of this, Satan will be reluctant to put evil thoughts into your heart, afraid that you would increase your consideration towards your brother and will make dua for him again.
O youth.......be assured that knowledge alone does not strengthen the hand......Though a man read a hundred thousand scientific questions and understood them or learned them, but did not work with them---They do not benefit him except by working.....Knowledge is the tree, and working is its fruit; and though you studied a hundred years and assembled a thousand books, you would not be prepared for the mercy of Allah the Exalted except by working.
Dear friend,
Your heart is a polished mirror. You must wipe it dean of the veil of dust that has gathered upon it, because it is destined to reflect the light of divine secrets.