The Book of Prayers
4/11. Chapter:
It Is Obligatory To Recite Al-Fatihah In Every Rak'ah; If A Person Cannot Recite Al-Fatihah Or Cannot Learn It, Then He Should Recite Whatever Else He Can Manage
Sahih Muslim
حَدَّثَنِي أَحْمَدُ بْنُ جَعْفَرٍ الْمَعْقِرِيُّ، حَدَّثَنَا النَّضْرُ بْنُ مُحَمَّدٍ، حَدَّثَنَا أَبُو أُوَيْسٍ، أَخْبَرَنِي الْعَلاَءُ، قَالَ سَمِعْتُ مِنْ أَبِي وَمِنْ أَبِي السَّائِبِ، وَكَانَا، جَلِيسَىْ أَبِي هُرَيْرَةَ قَالاَ قَالَ أَبُو هُرَيْرَةَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ صَلَّى صَلاَةً لَمْ يَقْرَأْ فِيهَا بِفَاتِحَةِ الْكِتَابِ فَهْىَ خِدَاجٌ " . يَقُولُهَا ثَلاَثًا بِمِثْلِ حَدِيثِهِمْ .
Abu Huraira reported: The Messenger of Allah (ﷺ) said: He who said his prayer, but did not recite the opening chapter of al-Kitab, his prayer is incomplete. He repeated it thrice.
Reference : Sahih Muslim 395cIn-book reference : Book 4, Hadith 43USC-MSA web (English) reference : Book 4, Hadith 777