Hazrat Aswad says: Abdullah said: If the people of knowledge safeguard their knowledge, and spread it only among those who are worthy of it, then because of this they would rule over the people of their time. But they squandered that knowledge among the people of the world so that through it they might obtain their worldly wealth and benefits from them. So they became disgraced among the people of the world. I heard your Prophet e say: Whoever chooses one concern (the concern for religion) out of all his concerns, Allah Almighty will suffice him in the matter of his Hereafter. And the person whom (worldly) worries and the conditions of the world entangle and scatter into various desires and aspirations, Allah Almighty will not care in the least into which valley (of calamity and misguidance) he falls.