Mishkat al-Masabih
Jabir b. Samura said that the. Prophet used to recite at the dawn prayer, "Qaf. By the glorious Qur'an"* and a passage of similar length, and his prayer afterwards was shortened. *Al-Qur’an; 50. Muslim transmitted it.
وَعَنْ جَابِرِ بْنِ سَمُرَةَ قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقْرَأُ فِي الْفَجْرِ ب (ق وَالْقُرْآن الْمجِيد) وَنَحْوِهَا وَكَانَتْ صَلَاتُهُ بَعْدُ تَخْفِيفًا. رَوَاهُ مُسْلِمٌ
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