Tirmidhi 568

[Its chain of transmission is daif]. Ibn Majah narrated it in the Book of Establishing Prayers, chapter "The Number of Prostrations of the Quran," no. 1055, from the hadith of Abdullah bin Wahb through the same route.Umar bin Hayan Dimashqi is unknown (per Taqrib), and between him and Umm Darda there is an unknown man, see the following hadith.This subject is also reported from Ali [Bayhaqi 2/315, as a report attributed to him without reaching the Prophet], Ibn Abbas [Bukhari, no. 1069], Abu Hurairah [Bukhari, no. 1068, and Muslim, no. 880], Ibn Masud [Bukhari, no. 1067, and Muslim, no. 576], Zayd bin Thabit [Bukhari, no. 1072, and Muslim, no. 577], and Amr bin As [Abu Dawud, no. 1401].