عَنْ عُبَادَةَ بْنِ الصَّامِتِ، يَبْلُغُ بِهِ النَّبِيَّ صَلَّى اللّٰهُ عَلَيْهِ وَسَلَّم: لاَ صَلاَةَ لِمَنْ لَمْ يَقْرَأْ بِفَاتِحَةِ الْكِتَابِ
‘Ubada bin as-Samit reported from Allah’s Messengersa, “He who does not recite Fatiha-tul-Kitab is not credited with having observed the prayer.”
(Sahih al-Bukhari, Kitab al-adhan, Bab wujubi l-qira’ati…)