'Umar bin Khattab (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Eat olive oil and apply it (to your body), for it is from a blessed tree." __QUR_N__.

Imam Tirmidhi says: We know this hadith only from the narration of 'Abdur Razzaq, who narrates it from Ma'mar.

2- 'Abdur Razzaq is inconsistent in narrating this hadith; sometimes he narrates it as marfu' (attributed to the Prophet), and sometimes, narrating with doubt, he says: I think 'Umar (may Allah be pleased with him) narrated it from the Prophet (peace and blessings of Allah be upon him), and sometimes he says: It is narrated from Zayd bin Aslam, from his father, and he narrates it from the Prophet (peace and blessings of Allah be upon him) in a mursal manner. __XREF_N__ __REF_N__

‘With this chain,’ Mu’ammar narrated a similar hadith with the chain «زيد بن أسلم عن أبيه عن النبي صلى الله عليه وسلم» , in which he did not mention the intermediary of ‘Umar.

Abu Usaid (may Allah be pleased with him) reports that the Prophet Muhammad (peace and blessings be upon him) said: "Eat olive oil and apply it (to your body), for it is from a blessed tree." __REF_N__ Imam Tirmidhi says:
This hadith is gharib through this chain; we know it only from the narration of Sufyan al-Thawri from Abdullah ibn Isa.