If anyone observes a prayer in which he does not recite Umm al-Qur’an, it is incomplete, it is incomplete, it is incomplete, and deficient. (The narrator said) I said: Abu Hurairah, sometime I pray behind the imam(then what should I do)? Pressing my hand he replied: O Persian, recite it inwardly, for I heard the Messenger of Allah ﷺ as saying that Allah, Most High, has said: I have Me and the Half for my servant and My servant will receive what he asks. The Messenger of Allah ﷺ said: Recite. When the servant says: “praise be to Allah, the Lord of the Universe,” Allah, Most High says: “My servant has praised me.” When the servant says: “ The Compassionate, the merciful, “Allah Most High says: “My servant has lauded me.” When the servant says: “Owner of the Day of Judgment,” Allah, Most High, says: “My servant has glorified Me” When the servant says: “ Thee do we worship and of thee we ask help. “ (Allah says) “This is between Me and My servant, and My servant will receive what he asks.” When the servant says: “ Guide us to the Straight Path, the path of those whom thou hast favoured, not ( the path) of those who earn thine anger nor of those who go astray,”(Allah says: ) “This is for My servant, and My servant will receive what he asks.” (Using translation from Abū Dāʾūd 821)
قَالَ رَسُولُ اللهِ ﷺ «مَنْ صَلَّى صَلَاةً لَمْ يَقْرَأْ فِيهَا بِأُمِّ الْقُرْآنِ هِيَ خِدَاجٌ هِيَ خِدَاجٌ هِيَ خِدَاجٌ غَيْرُ تَمَامٍ» فَقُلْتُ يَا أَبَا هُرَيْرَةَ إِنِّي أَحْيَانًا أَكُونُ وَرَاءَ الْإِمَامِ فَغَمَزَ ذِرَاعِي وَقَالَ اقْرَأْ بِهَا يَا فَارِسِيُّ فِي نَفْسِكَ فَإِنِّي سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ قَالَ اللهُ ﷻ «قَسَمْتُ الصَّلَاةَ بَيْنِي وَبَيْنَ عَبْدِي نِصْفَيْنِ فَنِصْفُهَا لِي وَنِصْفُهَا لِعَبْدِي وَلِعَبْدِي مَا سَأَلَ» قَالَ رَسُولُ اللهِ ﷺ اقْرَءُوا يَقُولُ الْعَبْدُ {الْحَمْدُ لِلَّهِ رَبِّ الْعَالَمِينَ} [الفاتحة 2] يَقُولُ اللهُ «حَمِدَنِي عَبْدِي» يَقُولُ {الرَّحْمَنِ الرَّحِيمِ} [الفاتحة 1] يَقُولُ اللهُ «أَثْنَى عَلَيَّ عَبْدِي» يَقُولُ الْعَبْدُ {مَالِكِ يَوْمِ الدِّينِ} يَقُولُ اللهُ مَجَّدَنِي عَبْدِي وَهَذِهِ الْآيَةُ بَيْنِي وَبَيْنَ عَبْدِي وَلِعَبْدِي مَا سَأَلَ يَقُولُ الْعَبْدُ {اهْدِنَا الصِّرَاطَ الْمُسْتَقِيمَ صِرَاطَ الَّذِينَ أَنْعَمْتَ عَلَيْهِمْ غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلَا الضَّالِّينَ} [الفاتحة 7] فَهَؤُلَاءِ لِعَبْدِي وَلِعَبْدِي مَا سَأَلَ خَالَفَهُ سُفْيَانُ بْنُ عُيَيْنَةَ