Allah Ta'ala says, addressing Nabie [salallahu alaihi wasallam], "O you wrapped in a cloth, Stand [in prayer] by night except a portion, half of it or a little less, or a little more, and recite the Quraan in measured tones. Soon shall we send down to you a weighty message. Truly the rising by night is most potent for governing the soul, and most effective in speech [of praises and prayer]. [73:1-6]
