Ibn 'Abbas reported: I heard it from so many Companions of the Messenger of Allaah (sallAllaahu alayhi wa sallam) and one among them is 'Umar b. Khattab, and he is most dear to me among them that the Messenger of Allaah (sallAllaahu alayhi wa sallam) prohibited observing of prayer after the dawn prayer till the sun rose and after the 'Asr till the sun set. This hadith has been narrated by Qatada with the same chain of transmitters with a minor alteration of words.