Prayer (Kitab Al-Salat): Details of Commencing Prayer
Dawud :: Book 3 : Hadith 804
Narrated Jabir ibn Samurah:
The Apostle of Allah (peace_be_upon_him) 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.