It wasnarrated from 'Ubadah bin Samit that the Prophet (ﷺ) said:
"Thereis no prayer for the one who does not recite Fatihatil-Kitab init." (RU)
English reference (RU): Vol. 1, Book 5, Hadith 837 (RU)
Arabic reference (RU): Book 5, Hadith 886 (RU)