and those who disbelieve say wherefore is the quran not revealed unto him entire at once! thuswe reveal that we may establish thy heart there with and we have repeated it with a repetition.
وقال الذين كفروا لولا نزل عليه القرآن جملة واحدة كذلك لنثبت به فؤادك ورتلناه ترتيلا