Ahmad 6117

Its isnad is sahih. Muslim narrated it in a similar wording, 2:135, via Ibn Wahb, "Umar bin Muhammad told me, Qasim bin Ubaydullah bin Abdullah bin Umar told me, Salim narrated to him from his father, etc."So Muslim's isnad contains the addition of Qasim bin Ubaydullah between Umar bin Muhammad and Salim bin Abdullah bin Umar. As we said regarding the isnad before this one, he narrates directly from his father's uncle Salim bin Abdullah, and he also narrates from his father's cousin Qasim bin Ubaydullah bin Abdullah bin Umar. So it appears from the two isnads that he heard this from Qasim, from Salim, and then heard it from Salim himself, making this an instance of an added link within an otherwise connected chain. It is also possible that he heard it from Qasim but did not hear it from Salim, so he connected it once and transmitted it with a broken link another time.This concerns the narration of the hadith from Salim. As for the addition from Nafi, it is confirmed in Muslim just as it is here, and the wording of Muslim's narration is, "He said, and Nafi used to add to it, etc."The one who says this is certainly Umar bin Muhammad, in both Ahmad's and Muslim's narrations, because he is the one who narrates from Nafi, whereas his father's cousin Qasim bin Ubaydullah is not mentioned among those who narrate from Nafi.This Qasim bin Ubaydullah is trustworthy. Ibn Hibban mentioned him in al-Thiqat, and Bukhari gave his biography in al-Kabir, 4/1/165, and reported this hadith on his authority, through the narration of Abu Aqeel Yahya bin Mutawakkil, from him, from his uncle Salim, without the addition from Nafi. This supports the view we have taken, that this addition comes from Umar bin Muhammad's narration from Nafi. Ibn Abu Hatim also gave his biography in Jarh wa Tadil, 3/2/112.Qasim was meticulous in narration and careful to verify it. Muslim reported in his Sahih, 1:8, that Yahya bin Saeed said to Qasim, "Abu Muhammad, it is truly disgraceful, indeed serious, for someone like you to be asked about a matter of this religion and have no knowledge of it, no clarity, or no knowledge and no way out." Qasim said to him, "Why is that?" He said, "Because you are the son of two guiding imams, the son of Abu Bakr and Umar." Qasim said to him, "More disgraceful to me than that would be for one who has understanding of Allah's religion to speak without knowledge, or to take knowledge from someone untrustworthy." He said, so he fell silent and gave him no answer.Yahya bin Saeed attributed him to Abu Bakr as well, because he was a descendant of Abu Bakr Siddiq.This hadith, as narrated by Qasim, was also attributed by Hafiz, in his biography of him in Tahdhib, 8:325-326, to Nasai.The essence of the hadith, without the addition from Nafi found here, has already appeared several times, at 4537, 4886, 5514, and 5847.