And the infidels said why the Quran was not sent down on them all at once? We have thus sent it down gradually that We may strengthen your heart there with and We recited it with gradual recitation.[25:32]
A person said (to 'Abdullah b. Umar the narrator): Which of the two precedes the other-Pilgrimage or the fasts of Rarnadan? Upon this he (the narrator) replied: No (it is not the Pilgrimage first) but the fasts of Ramadan precede the Pilgrimage.