And whoever sees an hour of the night, then it is interpreted in two ways, that its rule is half a month and there is no ruling for it, because God Almighty said: ~ So we erased the sign of the night. ~ And some of the expressions said that there is no expression for the hours of the night except as presented in the index of considering the time and what has passed from it, either to edit his hour and the rule of its expression It is originally fallen, and there is much discussion and difference between the two expressions. The expression of night and day, heat and cold has been presented in its chapter, and God knows what is correct .