And [it is] a Qur\'an which We have separated [by intervals] that you might recite it to the people over a prolonged period. And We have sent it down progressively.
and a Koran We have divided, for thee to recite it to mankind at intervals, and We have sent it down successively.
(It is) a Qur'an which We have divided (into parts from time to time), in order that thou mightest recite it to men at intervals: We have revealed it by stages.