Sayyiduna Abdullah bin Buhaynah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Did any of you recite along with me just now?" They said: Yes. He (peace and blessings be upon him) said: "I too was thinking: what is the reason that reciting the Qur'an is becoming difficult for me!"
(b) Then the people stopped reciting.
(c) Imam al-Bayhaqi (may Allah have mercy on him) said that Abu al-Sa'ib narrates from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he (peace and blessings be upon him) said: "Whoever does not recite Surah al-Fatihah in the prayer, his prayer is deficient." (Abu al-Sa'ib said:) I said: O Abu Hurayrah, what should I do when I am behind the imam? He took hold of my arm, pressed it and said: O Persian, recite it within yourself.
(d) The fact that both of these hadiths are reported from Sayyiduna Abu Hurayrah (may Allah be pleased with him) is evidence that the narration of Ibn Ukaymah is weak.
Ya'qub bin Sufyan said: This is an error, without any doubt or uncertainty. The authenticity of this hadith from the Prophet (peace and blessings be upon him) is questionable, because it is the narration of Ibn Ukaymah al-Laythi, who is majhul (unknown); he narrated nothing but this one hadith, no one but al-Zuhri narrated from him, and al-Zuhri knew no more of him than that he saw him narrating to Sa'id bin al-Musayyib. Al-Humaydi said about the hadith of Ibn Ukaymah: This is a hadith narrated by an unknown man from whom no one else ever narrated.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2895