Umar bin Khattab ordered Ubayy bin Kaab and Tamim al-Dari to lead the people in eleven rakahs. He said, "The reciter would recite hundreds of verses, until we leaned upon staffs from the length of the standing, and we would not finish until the early hours of dawn."
أمر عمر بن الخطاب أبي بن كعب وتميما الداري أن يقوما للناس بإحدى عشرة ركعة. قال: وقد كان القارئ يقرأ بالمئين، حتى كنا نعتمد على العصي من طول القيام، وما كنا ننصرف إلا في فروع الفجر.
Malik narrated it in "Prayer in Ramadan" (4) from Muhammad bin Yusuf, from Saaib bin Yazid, and he related it. Its chain of transmission is sahih. Saaib bin Yazid was a young companion, and Muhammad bin Yusuf al-Araj is among the reliable successors, and he is the son of Saaib bin Yazid's sister, as the narration explicitly states in Sunan al-Kubra by Bayhaqi (2/496) through the route of Malik, and both Bukhari and Muslim relied on him as evidence.Saeed bin Mansur also narrated it in his Sunan through another route, from Abdul-Aziz bin Muhammad, from Muhammad bin Yusuf, with his chain, in the same manner. See Sharh Muwatta by Zurqani (1/354). Likewise, Yahya bin Saeed narrated it as found with Abu Bakr bin Abu Shayba (2/391), and Ismail bin Jafar in the hadith of Ali bin Hajar (440), and Muhammad bin Ishaq as found with Muhammad bin Nasr in Qiyam al-Layl (p. 42), all of these from Muhammad bin Yusuf, with the same wording, except that Ibn Ishaq said, "thirteen rakats."These corroborating narrations show that Malik did not err in his statement, "eleven rakats," and that he was not alone in reporting it, contrary to what Hafiz bin Abdul-Barr said.Bayhaqi said in "Fadail al-Awqat" (p. 275), after producing the hadith through the route of Malik, "This is how it appears in this narration, and it agrees with the narration of Ayesha from the Prophet ﷺ regarding the number of rakats of his night prayer in the month of Ramadan and otherwise. Umar bin Khattab had ordered this number for a time, then ordered what..." meaning the reports that will come regarding him.