(1) Know, O brother, that in the Koran God hath said, "We will set up a just balance on the Day of Resurrection, and no soul shall be wronged in anything. Whosoever has wrought a grain of good or ill shall then behold it." In the Koran it is also written, "Let every soul see what it sends on before it for the Day of Account." It was a saying of the Caliph Omar, "Call yourselves to account before ye be called to account"; and God says, "O ye believers, be patient and strive against your natural desires, and maintain the strife manfully." The saints have always understood that they have come into this world to carry on a spiritual traffic, the resulting gain or loss of which is heaven or hell. They have, therefore, always kept a jealous eye upon the flesh, which, like a treacherous partner in business, may cause them great loss. He, therefore, is a wise man who, after his morning prayer, spends a whole hour in making a spiritual reckoning, and says to his soul, "Oh my soul, thou hast only one life; no single moment that has passed can be recovered, for in the counsel of God the number of breaths allotted thee is fixed, and cannot be increased. When life is over no further spiritual traffic is possible for thee; therefore what thou dost, do now; treat this day as if thy life had been already spent, and this were an extra day granted thee by the special favour of the Almighty. What can be greater folly than to lose it?"