Abu Dawud
Prayer
Book Number: 002 / Hadith Number: 804
Narated By Jabir ibn Samurah : The Apostle of Allah (pbuh) used to recite in the noon and afternoon prayer: "By the Heaven and the Morning Star" (Surah 86) and "By the Heaven , holding mansions of the stars" (Surah 85) and similar surahs of equal length.