(138) باب مَنْ تَرَكَ الْقِرَاءَةَ فِي صَلاَتِهِ بِفَاتِحَةِ الْكِتَابِ
Abu hurairah said:
The Messenger of Allah (ﷺ) commanded me to announce that prayer is not valid but with the recitation of Fatihat al-kitab and something more.
Reference: Sunan Abi Dawud 820
In-book reference: Book 2, Hadith 430
English translation: Book 2, Hadith 819