Sunan an-Nasa'i 911
سنن النسائي#911SahihIt was narrated that Ubadah bin As-Samit said:"The Messenger of Allah (ﷺ) said: "There is no Salah for one who does not recite Fatihatil-Kitab or more
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 11:36