I used to teach Quran to 'Abdur-Rahman bin Auf. When Umar performed his last Hajj, 'Abdur-Rahman said (to me) at Mina, "Would that you had seen Chief of the believers today! A man came to him and said, "So-and-so has said, "If Chief of the Believers died, we will give the oath of allegiance to such-and-such person,' 'Umar said, 'I will get up tonight and warn those who want to usurp the people's rights.' I said, 'Do not do so, for the season (of Hajj) gathers the riffraff mob who will form the majority of your audience, and I am afraid that they will not understand (the meaning of) your saying properly and may spread (an incorrect statement) everywhere. You should wait till we reach Medina, the place of migration and the place of the Sunna (the Prophet's Traditions). There you will meet the companions of Allah's Messenger (ﷺ) from the Muhajirin and the Ansar who will understand your statement and place it in its proper position' 'Umar said, 'By Allah, I shall do so the first time I stand (to address the people) in Medina.' When we reached Medina, 'Umar (in a Friday Khutba-sermon) said, "No doubt, Allah sent Muhammad with the Truth and revealed to him the Book (Quran), and among what was revealed, was the Verse of Ar-Rajm (stoning adulterers to death).'" (See Hadith No. 817,Vol. 8)
Sahih al-Bukhari Book 96, Hadith 53
Yahya related to me from Malik from Ibn Shihab that Umar ibn al-
Khattab told people to kill snakes in the Haram.
Malik said,
about the "wild dogs" which people were told to kill in the Haram,
that any animals that wounded, attacked, or terrorised men, such as
lions, leopards, Iynxes and wolves, were counted as"wild dogs."
However, someone who was in ihram should not kill beasts of prey that
did not attack (people), such as hyenas, foxes, cats and anything else
like them, and if he did then he had to pay a forfeit for it.
Similarly, someone in ihram should not kill any predatory birds except
the kinds that the Prophet, may Allah bless him and grant him peace,
specified, namely crows and kites. If someone in ihram killed any
other kind of bird he had to pay a forfeit for it.
Muwatta Malik Book 20, Hadith 93
Allah's Messenger (ﷺ) used to visit Um Haram bint Milhan she was the wife of 'Ubada bin As-Samit. One
day the Prophet (ﷺ) visited her and she provided him with food and started looking for lice in his head.
Then Allah's Messenger (ﷺ) slept and afterwards woke up smiling. Um Haram asked, "What makes you
smile, O Allah's Messenger (ﷺ)?" He said, "Some of my followers were presented before me in my dream as
fighters in Allah's Cause, sailing in the middle of the seas like kings on the thrones or like kings sitting
on their thrones." (The narrator 'Is-haq is not sure as to which expression was correct). Um Haram
added, 'I said, "O Allah's Messenger (ﷺ)! Invoke Allah, to make me one of them;" So Allah's Messenger (ﷺ)
invoked Allah for her and then laid his head down (and slept). Then he woke up smiling (again). (Um
Haram added): I said, "What makes you smile, O Allah's Messenger (ﷺ)?" He said, "Some people of my
followers were presented before me (in a dream) as fighters in Allah's Cause." He said the same as he
had said before. I said, "O Allah's Messenger (ﷺ)! Invoke Allah to make me from them." He said, "You are
among the first ones." Then Um Haram sailed over the sea during the Caliphate of Muawiya bin Abu
Sufyan, and she fell down from her riding animal after coming ashore, and died.
Sahih al-Bukhari Book 91, Hadith 20