It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "When you are three people, then two of you should not whisper to each other excluding the third." We asked: What if there are four? He said: "Then there is no harm."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) would not leave touching the Black Stone and the Yemeni Corner in any circumambulation.

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When any one of you calls his brother 'O disbeliever,' then surely one of them returns as a disbeliever."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that he heard the Noble Prophet (peace and blessings be upon him) saying: "Do not let the Bedouins dominate you regarding the name of your prayer. Remember, its name is the 'Isha prayer. At that time, they milk their camels, and because of this, they call the 'Isha prayer 'Atamah'."

Sulaiman, the freed slave of Maymunah, says: Once I came to Sayyiduna Ibn Umar (may Allah be pleased with them) while he was among the bushes of the trees and people were praying in the mosque. I asked him, "Why are you not praying with the people?" He replied, "I heard the Noble Prophet (peace and blessings be upon him) say: Do not perform the same prayer twice in one day."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger (peace and blessings of Allah be upon him) said: "Whoever drinks alcohol in this world and does not repent from it, he will be deprived of it in the Hereafter, and he will not be given alcohol there."

It is narrated from Nafi’ (may Allah have mercy on him), most likely on the authority of Sayyiduna Ibn Umar (may Allah be pleased with them both), that Sayyiduna Abbas (may Allah be pleased with him) sought permission from the Noble Prophet (peace and blessings be upon him) to stay in Makkah during the days of Mina in order to carry out the service of providing water to the pilgrims, so the Noble Prophet (peace and blessings be upon him) granted him permission.

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) forbade shighar marriage (exchange marriage). The narrator asked Nafi’ about the meaning of shighar, so he replied: That a man marries his daughter to someone and that person marries his daughter to him, or he marries his sister to someone and himself marries that person’s sister, and no dowry is fixed.

Sayyiduna Saeed bin Jubair (may Allah have mercy on him) says that during the caliphate of Sayyiduna Abdullah bin Zubair, someone asked me this question: If there has been li'an between a man and a woman, should separation be made between them (or does it happen automatically)? I could not think of an answer, so I got up from my place and went to the house of Sayyiduna Ibn Umar (may Allah be pleased with them both) and said to him, "O Abu Abdur Rahman! Should separation be made between those who perform li'an?" Upon hearing my question, he said, "Subhan Allah," and said: "The first person to ask about li'an was so-and-so son of so-and-so. He said, 'O Messenger of Allah! Tell me, if a man sees his wife committing adultery, if he speaks, he says a great thing, and if he remains silent, he remains silent over such a great matter?' The Prophet (peace and blessings be upon him) remained silent instead of answering his question. After a short while, that man again came to the Prophet (peace and blessings be upon him) and said, 'I have been afflicted with the matter I asked you about.' Upon this, Allah revealed these verses of Surah An-Nur «والذين يرمون ازواجهم . . . . . . ان كان من الصدقين» . The Prophet (peace and blessings be upon him), in accordance with these verses, started the li'an with the man, admonished and advised him, and said, 'The punishment of this world is lighter than the punishment of the Hereafter.' He said, 'By the One Who sent you with the truth, I am not lying to you.' Secondly, the Prophet (peace and blessings be upon him) called the woman, admonished and advised her, and said, 'The punishment of this world is lighter than the punishment of the Hereafter.' She said, 'By the One Who sent you with the truth, he is lying.' Then the Prophet (peace and blessings be upon him) started with the man, and he swore by Allah four times, testifying that he was truthful, and the fifth time he said, 'If I am lying, then may the curse of Allah be upon me.' Then he turned to the woman, and she also swore by Allah four times, testifying that he was lying, and the fifth time she said, 'If he is truthful, then may the wrath of Allah be upon me.' Then the Prophet (peace and blessings be upon him) separated the two of them."

It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) said: "When the edge of the sun begins to rise, do not perform prayer until it becomes fully apparent, and likewise, when the edge of the sun begins to set, do not perform prayer until it has completely set."