He narrated to him that he saw the grave of the Prophet ﷺ raised in a rounded mound.
أنه حدثه أنه رأى قبر النبي ﷺ مسنما.
Bukhari related it in the Book of Funerals (1390/2) from Muhammad bin Muqatil, who said, Abdullah informed us, Abu Bakr bin Ayyash informed us, from Sufyan the date-seller, and he mentioned it. Sufyan the date-seller is Ibn Dinar according to the correct view, though it has been said he is Ibn Ziyad, but the correct view is that he is someone else. Each of the two is an Usfuri from Kufa, and he is among the senior followers of the Tabiin.His word "musannam" means raised.Abu Naeem added in al-Mustakhraj, "And the graves of Abu Bakr and Umar were likewise." This has been used as evidence that it is preferable for graves to be raised in a ridge shape, which is the view of Abu Hanifa, Malik, Ahmad, Muzani, and many of the Shafiis. See Fath al-Bari.This does not contradict what was narrated from Qasim (who is the son of Muhammad bin Abu Bakr Siddiq), who said, "I went in to see Ayesha and said, 'O Mother, uncover for me the grave of the Prophet ﷺ and his two companions .' So she uncovered for me three graves, neither raised up nor flattened, spread with the red pebbles of the open courtyard."Abu Ali Lului said, "It is said that the Messenger of Allah ﷺ is in front, Abu Bakr is at his head, and Umar is at his feet, his head being at the feet of the Messenger of Allah ﷺ."First, because it is daif. Abu Dawud related it (3220) from Ahmad bin Salih, who said, Ibn Abu Fudayk narrated to us, Amr bin Uthman bin Hani informed me, from Qasim, and he mentioned it. Amr bin Uthman bin Hani al-Madani is "mastur" as stated in Taqrib, while Hakim said in Mustadrak (1/369), "The chain is sahih."Second, even granting that Qasim's statement is correct, it is possible that his grave ﷺ was not raised at first, and that when the wall of the grave was built during the governorship of Umar bin Abdul-Aziz over Madinah, appointed by Walid bin Abdul-Malik, they made it raised. Abu Bakr Ajurri related in his book Sifat Qabr Nabi ﷺ, through the route of Ishaq bin Isa, son of the daughter of Dawud bin Abu Hind, from Ghunaym bin Bistam Madini, who said, "I saw the grave of the Prophet ﷺ during the governorship of Umar bin Abdul-Aziz, and I found it raised about four fingers. I saw the grave of Abu Bakr behind his grave, and I saw the grave of Umar behind the grave of Abu Bakr, lower than it." This is as stated in Fath al-Bari.Third, his statement "musannam" does not contradict his statement "spread with the red pebbles of the courtyard," as Hafiz bin Qayyim said in Zad (1/524), "So his grave is raised and spread with the red pebbles of the courtyard, neither built up nor plastered, and likewise were the graves of his two companions." End of quote.I say, this is indicated by the hadith of Jabir bin Abdullah that follows.