The Book of Prayers (Kitab Al-Salat) 
Muslim :: Book 4 : Hadith 923
Jabir b. Samura reported: The Apostle of Allah (may peace be upon him) used to recite in the morning prayer" Qaf. By the Glorious Quran." and his prayer afterward shortened.
The Book of Prayers (Kitab Al-Salat)
Muslim :: Book 4 : Hadith 923
Jabir b. Samura reported: The Apostle of Allah (may peace be upon him) used to recite in the morning prayer" Qaf. By the Glorious Quran." and his prayer afterward shortened.