Once food was presented to Sayyiduna Umar (may Allah be pleased with him), he invited a man to join him. The man said, "I am fasting." Umar asked, "Which fast are you observing?" He said, "If there was no fear of error, I would narrate to you the hadith of the Prophet (peace and blessings be upon him) when a Bedouin brought a rabbit to the Prophet (peace and blessings be upon him)." He said, "Go and call Sayyiduna Ammar (may Allah be pleased with him)." When Sayyiduna Ammar (may Allah be pleased with him) arrived, Sayyiduna Umar (may Allah be pleased with him) asked him, "Were you present with the Prophet (peace and blessings be upon him) on the day when a Bedouin brought a rabbit?" He replied, "Yes! I saw blood on it." The Prophet (peace and blessings be upon him) said, "Eat it." The man said, "I am fasting." The Prophet (peace and blessings be upon him) asked, "What kind of fast?" He said, "I fast at the beginning and end of every month." The Prophet (peace and blessings be upon him) said, "If you want to fast, then for voluntary fasts, choose the 13th, 14th, and 15th days of the month."

Masruq bin Ajda’ says that once I met Sayyiduna Umar (may Allah be pleased with him), and he asked,“Who are you?”I replied,“I am Masruq bin Ajda’.”He said,“I heard the Prophet (peace and blessings be upon him) say that Ajda’ is a name of Satan, so your name is Masruq bin Abdur Rahman.”‘Amir says that once I saw his name written as Masruq bin Abdur Rahman in his register, so I asked him about it. He explained that Sayyiduna Umar (may Allah be pleased with him) had given him this name.

It is narrated from Sayyiduna Umar (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade us from practicing coitus interruptus with a free woman without her permission.

Aslam, who was the freed slave of Sayyiduna Umar (may Allah be pleased with him), says: I heard Sayyiduna Umar (may Allah be pleased with him) saying that if I remain alive until next year, then whichever town or city is conquered, I will distribute it among the conquerors just as the Prophet (peace and blessings be upon him) distributed Khaybar.

It is narrated from Sayyiduna Umar (may Allah be pleased with him) that once I was with the Prophet (peace and blessings of Allah be upon him) in a battle. On one occasion, I swore an oath «لا وابي» when a man from behind said to me, "Do not swear oaths by the names of your forefathers." I looked and saw that it was the Prophet (peace and blessings of Allah be upon him).

Sayyiduna Umar (may Allah be pleased with him) said: If I remain alive, then insha’Allah I will expel the Jews and Christians from the Arabian Peninsula.

It is narrated from Sayyiduna Umar (may Allah be pleased with him) that I saw the Prophet (peace and blessings of Allah be upon him) wiping over his leather socks.

Sayyar bin Ma’rur says that once I heard Sayyiduna Umar (may Allah be pleased with him) saying during a sermon that the construction of this mosque was carried out by the Prophet (peace and blessings be upon him) together with the Muhajirun and Ansar. If the crowd becomes too large (instead of blaming the lack of space in the mosque), perform prostration on your brother’s back. Similarly, once Sayyiduna Umar (may Allah be pleased with him) saw some people praying on the road and said: Perform prayer in the mosque.

Harithah bin Mudarrib says that he had the honor of performing Hajj with Sayyiduna Umar (may Allah be pleased with him). Some dignitaries from Syria came to him and said, "O Commander of the Faithful! We have acquired some slaves and animals. Please collect zakat from our wealth so that our wealth may become purified and it may be a means of purification for us." He replied, "This action was not done by my two predecessors before me, so how can I do it? However, wait! I will consult with the Muslims."

It is narrated from Sayyiduna Umar (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "If I remain alive, I will certainly expel the Jews and Christians from the Arabian Peninsula, so that none but Muslims shall remain there."