Establish prayer from declining of the sun till the darkening of the night and the Quran of the dawn. No doubt, angles are present in the Quran of the dawn.[17:78]
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.