822
Sahih+3
Ubadah b. al-Samit reported the Messenger of Allah (ﷺ) as saying :the prayer is not valid I one does not recite fatihat al-kitab and something more, sufyan( the narrator) said: This applies to a man who prays alone
SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid