Ubada b. as-Samit reported from the Messenger of Allah (may peace be upon him ):He who does not recite Fatihat al-Kitab is not credited with having observed the prayer
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ الْحُلْوَانِيُّ، حَدَّثَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ بْنِ سَعْدٍ، حَدَّثَنَا أَبِي، عَنْ صَالِحٍ، عَنِ ابْنِ شِهَابٍ، أَنَّ مَحْمُودَ بْنَ الرَّبِيعِ الَّذِي، مَجَّ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي وَجْهِهِ مِنْ بِئْرِهِمْ أَخْبَرَهُ أَنَّ عُبَادَةَ بْنَ الصَّامِتِ أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ صَلاَةَ لِمَنْ لَمْ يَقْرَأْ بِأُمِّ الْقُرْآنِ ".
Mahmud b. al-Rabi', on whose face the Messenger of Allah (ﷺ) squirted water from the well, reported on the authority of 'Ubada b. as- Samit that the Messenger of Allah (ﷺ) said:He who does not recite Umm al-Qur'an is not credited with having observed prayer
This hadith has also been transmitted by Ma'mar from al-Zuhri with the same chain of transmitters with the addition of these words:" and something more