I exchanged some silver for gold with Talhah bin ‘Ubaidullah, and he said: Wait for me until our storekeeper comes from al-Ghabah, `Umar bin al-Khattab heard that and said: No, by Allah! Do not leave him until you take your exchange from him, for I heard the Messenger of Allah (ﷺ) say: `Gold for silver is riba unless it is `here, take this` and `here, take this` .”
Ibn `Umar saw Sa`d bin Malik wiping over his leather slippers. Ibn ʼUmar said: Is it you doing this? Sa`d said: Yes. They both went to ‘Umar and Sa`d said to ‘Umar, Give my brother`s son a fatwa with regard to wiping over leather slippers. `Umar said, When we were with our Prophet (ﷺ) we used to wipe over our leather slippers. Ibn `Umar said: Even if that is after one has defecated and urinated? He said: Yes, even if that is after one has defecated and urinated. Nafiʼ said: After that, Ibn ‘Umar would wipe over them and not take them off, and he did not give a time limit for that. I told that to Ma`mar and he said: Ayyoob told me something similar from Nafi`.
Narrated It was narrated that `Ubaidullah bin `Abdullah bin `Utbah said:
When the apostates apostatised at the time of Abu Bakr, ‘Umar said: How can you fight the people, O Abu Bakr, when the Messenger of Allah (ﷺ) said: “I have been commanded to fight the people until they say La ilaha illallah (There is no god but Allah), and whoever says La ilaha illallah, his wealth and his life are protected from me except in cases dictated by Islamic law, and his reckoning will be with Allah`? Abu Bakr said: By Allah, I will most certainly fight those who separate prayer and zakah, for zakah is what is due on wealth. By Allah, if they withhold from me a small she-goat that they used to give to the Messenger of Allah (ﷺ), I will certainly fight them for withholding it. `Umar bin al-Khattab said. By Allah, as soon as I saw that Allah had opened Abu Bakr`s heart to the idea of fighting, I knew that he was right.