It is reported on the authority of Ibn 'Umar that the Apostle (ﷺ) (may peace and blessings be upon him) observed: When a man calls his brother an unbeliever, it returns (at least) to one of them.

It is narrated on the authority of 'Abdullah bin 'Umar (RA) who narrates from the Prophet (ﷺ) of Allah (ﷺ) who said: He who took up arms against us is not of us.

It is narrated on the authority of 'Abdullah bin 'Umar (RA) that the Messenger of Allah (ﷺ) said: I found myself one night near the Ka’bah, and I saw a man with wheat complexion amongst the fair-complexioned men that you ever saw. He had a lock of hair the most beautiful of the locks that you ever saw. He had combed it. Water was trickling out of them. He was leaning on two men, or on the shoulders of two men, and he was circumscribing the Ka’bah. I asked, What is he? It was said: He is al-Masih son of Mary. Then I saw another person, stout and having too much curly hair, and blind in his right eye as if it was a full swollen grape. I asked Who is he? It was said: He is al-Masih al-Dajjal.

It is narrated on the authority of 'Abdullah bin 'Umar that one day the Messenger of Allah (ﷺ) mentioned in the presence of people about al-Masih al-Dajjal. He said: Verily Allah (hallowed be He and High) is not blind of one eye. Behold, but the Masih al-Dajjal is blind of right eye as if his eye is like a swollen grape, and the Messenger of Allah (ﷺ) said: I was shown in a dream in the night that near the Ka’bah there was a man fair-complexioned, fine amongst the white-complexioned men that you ever saw, his locks of hair were falling on his shoulders. He was a man whose hair were neither too curly nor too straight, and water trickled down from his head. He was placing his bands on the shoulders of two persons and amidst them was making a circuit around the Ka’bah. I said: Who is he? They replied: Al-Masih son of Mary. And I saw behind him a man with intensely curly hair, blind of right eye. Amongst the persons I have ever seen Ibn Qatan has the greatest resemblance with him. He was making a circuit around the Ka’bah by placing both his hands on the shoulders of two persons. I said: Who is he? They said; It is al-Masih al-Dajjal.

Ibn 'Umar (RA) said: The Apostle of Allah (ﷺ) said: Trim closely the moustache, and let the beard grow.

Ibn 'Umar (RA) said: The Apostle of Allah (ﷺ) ordered us to trim the moustache closely and spare the beard.

Ibn 'Umar (RA) said: The Messenger of Allah (ﷺ) (may peace be opon him) said: Act against the polytheists, trim closely the moustache and grow beard.

Ibn 'Umar reported: Umar said: Is one amongst us permitted to sleep in a state of impurity (i. e. after having sexual intercourse)? He (the Holy Prophet) said: Yes, after performing ablution.

Ibn 'Umar said: 'Umar asked the verdict of the Shari'ah from the Apostle (ﷺ) thus: Is it permissible for any one of us to sleep in a state of impurity? He (the Holy Prophet (ﷺ) said: Yes, he must perform ablution and then sleep and take a bath when he desires.

Ibn 'Umar (RA) reported: A person happened to pass by the Messenger of Allah (ﷺ) when he was making water and saluted him, but he did not respond to his salutation.

Ibn 'Umar (RA) reported: When the Muslims came to Madinah, they gathered and sought to know the time of prayer but no one summoned them. One day they discussed the matter, and some of them said: Use something like the bell of the Christians and some of them said: Use horn like that of the Jews. Umar said: Why may not a be appointed who should call (people) to prayer? The Messenger of Allah (ﷺ) said: O Bilal (RA) , get up and summon (the people) to prayer.

Ibn 'Umar (RA) reported: The Messenger of Allah (ﷺ) had two Mu'adhdhins, Bilal (RA) and 'Abdullah bin Umm Maktum, who (latter) was blind.

Ibn 'Umar reported: 'The Messenger of Allah (ﷺ) said: Do not prevent the maid-servants of Allah from going to the mosque.

This hadith has been narrated by some other narrators, Ibn 'Abbas and others, and they all reported that 'Ali said: The Apostle of Allah (ﷺ) forbade me to recite the Qur'an while I am in a state of bowing and prostration, and in their narration (there is a mention of) forbiddance from that (recital) in the state of prostration as it has been transmitted by Zuhri, Zaid bin Aslam, al-Wahid bin Kathir, and Dawud bin Qais.

Ibn 'Umar (RA) reported: When the Messenger of Allah (ﷺ) (may peace he upon him) went out on the 'Id day, he ordered to carry a spear-and it was fixed in front of him, and he said prayer towards its (direction), and the people were behind him. And he did it in the journey, and that is the reason why the Amirs carried it.

Ibn 'Umar (RA) reported: The Apostle of Allah (ﷺ) set up (sutra), and Abu Bakr (RA) said: He implanted iron-tipped spear and said prayer towards its direction. Ibn Abu Shaiba made this addition to it: "Ubaidullah said that it was a spear."

Ibn 'Umar said: The Apostle of Allah (ﷺ) used to place his camel (towards the Ka’bah) and said prayer in its direction.

Ibn 'Umar reported: The Apostle of Allah (ﷺ) used to say prayer towards his camel. Ibn Numair said: The Apostle of Allah (ﷺ) said prayer towards the camel.

Ibn 'Umar reported: As the people were engaged in the morning prayer a man came to them. The rest of the hadith is the same.

'Abdullah bin 'Umar (RA) reported: The Messenger of Allah (ﷺ) saw spittle on the wall towards Qibla, and scratched it away and then turning to the people said: When any one of you prays, he must not spit in front of him, for Allah is in front of him when he is engaged in prayer.

'Abdullah bin 'Umar (RA) reported: The Messenger of Allah (ﷺ) saw spittle on the wall towards Qibla, and scratched it away and then turning to the people said: When any one of you prays, he must not spit in front of him, for Allah is in front of him when he is engaged in prayer.

Ibn 'Umar reported: The Messenger of Allah (ﷺ) said: When the supper is served to any one of you and the prayer also begins. (in such a case) first take supper, and do not make haste (for prayer) till you have (taken the food).

A hadith like this has been narrated from the Apostle of Allah (ﷺ) on the authority of Ibn 'Umar with another chain of transmitters.

Ibn 'Umar reported: The Messenger of Allah (ﷺ) said: He who eats of this (offensive) plant must not approach our mosque, till its odour dies: (plant signifies) garlic.

Ibn 'Umar reported: The Messenger of Allah (ﷺ) said: He who eats of this (offensive) plant must not approach our mosque, till its odour dies: (plant signifies) garlic.

Ibn 'Umar reported: The Messenger of Allah (ﷺ) while reciting the Qur'an recited its scarab containing sajda, and he performed prostration and we also prostrated along with him (but we were so overcrowded) that some of us could not find a place for our forehead (when prostrating ourselves).

Ibn 'Umar reported: Sometimes the Messenger of Allah (ﷺ) recited the Qur'an, and would pass by (recite) the verse of sajda and performed prostration and he did this along with us, but we were so crowded in his company that none of us could find a place for performing prostration. (and it was done on occasions) other than prayer.

Ibn 'Umar reported that when the Messenger of Allah (ﷺ) sat for tashahhud he placed his left hand on his left knee. and his right hand on his right knee. and he raised his right finger, which is next to the thumb, making supplication in this way, and he stretched his left hand on his left knee. Another version on the authority of Ibn 'Umar (RA) says: When the Messenger of Allah (ﷺ) sat for tashahhud, he placed his left hand on his left knee and placed his right hand on his right knee, and he formed a ring like (fifty-three) and pointed with his finger of attestation.

Ibn 'Umar reported that when the Messenger of Allah (ﷺ) sat for tashahhud he placed his left hand on his left knee. and his right hand on his right knee. and he raised his right finger, which is next to the thumb, making supplication in this way, and he stretched his left hand on his left knee. Another version on the authority of Ibn 'Umar (RA) says: When the Messenger of Allah (ﷺ) sat for tashahhud, he placed his left hand on his left knee and placed his right hand on his right knee, and he formed a ring like (fifty-three) and pointed with his finger of attestation.

Ibn 'Umar (RA) reported that the Messenger of Allah (ﷺ) said: He who misses the afternoon prayer, it is as though he has been deprived of his family and his property.

'Abdullah bin 'Umar (RA) reported: We waited one night in expectation of the Messenger of Allah (ﷺ) for the last prayer of the night, and he came out to us when a third of the night had passed even after that. We do not know whether he had been occupied with family business or something else. When he came out he said: You are waiting for prayer, for which the followers of no other religion wait, except you. Were it not a burden for my Ummah, I would have led them (in the 'Isha' prayer) at this hour. He then ordered the Mu'adhdhin (to call for prayer) and then stood up for prayer and observed prayer.

'Abdullah bin 'Umar reported that the Messenger of Allah (ﷺ) was one night occupied (in some work) and he delayed it ('Isha' prayer) till we went to sleep in the mosque. We then woke up and again went to sleep and again woke up. The Messenger of Allah (ﷺ) then came to us and said: None among the people of the earth except you waits for prayer in the night.

Ibn 'Umar (RA) reported Allah's Messenger (ﷺ) assaying: Prayer said in a congregation is twenty-seven degrees more excellent than prayer said by a single person.

Ibn 'Umar reported Allah's Apostle (ﷺ) as saying: The prayer of a person in congregation is twenty-seven times in excess to the prayer said alone.

Ibn 'Umar reported from the Apostle of Allah (ﷺ) as some and twenty (degrees).

Ibn 'Umar reported: The Messenger of Allah (ﷺ) said two rak'ahs at Mina, and Abu Bakr (RA) after him, and 'Umar after Abu Bakr, and 'Uthman at the beginning of his caliphate; then 'Uthman observed four rak'ahs, and when Ibn 'Umar prayed with the Imam, he said four rak'ahs, but when he observed prayer alone, he said two rak'ahs.

Ibn 'Umar announced Adhan for prayer on a cold, windy night. Then added: Pray in your dwellings; and then said: When it was a cold, rainy night, the Messenger of Allah (ﷺ) used to command the Mu'adhdhin to say "Pray in your dwellings."

Ibn 'Umar reported that he summoned (people) to pray on a cold, windy and rainy night, and then observed at the end of the Adhan: Pray in your dwellings, pray in your dwellings, and then said: When it was a cold night or it was raining in a journey the Messenger of Allah (ﷺ) (may peace he upon him) used to command the Mu'adhdhin to announce: Pray in your dwellings.

Ibn 'Umar reported that he summoned (people) to prayer at a place (known as) Dajnan, and the rest of the hadith is the same, and then said: Pray in your dwellings, but he did not repeat for the second time words of Ibn 'Umar (Pray in your dwellings).

A hadith like this that Ibn 'Abbas ordered his Mu'adhdhin (to summon people to prayer and then make announcement to say prayer in their houses) on Friday which was a rainy day, has been transmitted by 'Abdullah bin Harith. Wuhaib, however, says that he did not hear it from him.