"O Momins, may God help you in making a profitable use of your ears and eyes. May He include you in the group about whom He says, "We have selected them for the selected Zikr". Bear in mind that knowledge is a powerful light. It can bring about wonderful changes in man provided he is sufficiently receptive. It is like a spark of fire which changes the dark charcoal into glowing embers burning with brightness.

When a 'Momin' received this light, he shows its effect by cutting himself off this world of vanity. God keeps him aloof from these who are mad after its wealth like hungry dogs after bones. The Prophet says, "He who loves this world loses his love for the next. If a man receives the light of knowledge and yet continues to love this world God increases His wrath on him."