وَعَنْ عَبْدُ اللَّهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ
قَالَ: صلينَا وَرَاء عمر ابْن الْخطاب الصُّبْح فَقَرَأَ فيهمَا بِسُورَةِ يُوسُفَ وَسُورَةِ الْحَجِّ قِرَاءَةً بَطِيئَةً قِيلَ لَهُ: إِذًا لَقَدْ كَانَ يَقُومُ حِينَ يَطْلُعُ الْفجْر قَالَ: أجل
Amir ibn Rabia said that they prayed the morning prayer behind Umar ibn al-Khattab and that he recited slowly in both rakas Sura Yusuf and Sura al-Hajj (Al-Qur’an; 22). When someone remarked that he must have begun the prayer at break of day he replied that that was so.