Hakim bin Hizam said, "I asked Allah's Messenger (ﷺ) for something, and he gave me. I asked him again, and he gave me, and said to me. 'O Hakim! This wealth is like green sweet (i.e. fruit), and if one takes it without greed, then one is blessed in it, and if one takes it with greediness, then one is not blessed in it, and will be like the one who eats without satisfaction. And an upper (i.e. giving) hand is better than a lower (i.e. taking) hand,' I said, 'O Allah's Messenger (ﷺ)! By Him Who has sent you with the Truth. I will not ask anyone for anything after you till I leave this world." So, when Abu Bakr during his Caliphate, called Hakim to give him (some money), Hakim refused to accept anything from him. Once `Umar called him (during his Caliphate) in order to give him something, but Hakim refused to accept it, whereupon `Umar said, "O Muslims! I give him (i.e. Hakim) his right which Allah has assigned to him) from this Fai '(booty), but he refuses to take it." So Hakim never took anything from anybody after the Prophet (ﷺ) till he died.
Sahih al-Bukhari Book 57, Hadith 51
← Previous Hadith We set out in the company of Allah's Messenger (ﷺ) on the day (of the battle) of Hunain. When we faced the enemy, the Muslims retreated and I saw a pagan throwing himself over a Muslim. I turned around and came upon him from behind and hit him on the shoulder with the sword He (i.e. the pagan) came towards me and seized me so violently that I felt as if it were death itself, but death overtook him and he released me. I followed `Umar bin Al Khattab and asked (him), "What is wrong with the people (fleeing)?" He replied, "This is the Will of Allah," After the people returned, the Prophet (ﷺ) sat and said, "Anyone who has killed an enemy and has a proof of that, will posses his spoils." I got up and said, "Who will be a witness for me?" and then sat down. The Prophet (ﷺ) again said, "Anyone who has killed an enemy and has proof of that, will possess his spoils." I (again) got up and said, "Who will be a witness for me?" and sat down. Then the Prophet (ﷺ) said the same for the third time. I again got up, and Allah's Messenger (ﷺ) said, "O Abu Qatada! What is your story?" Then I narrated the whole story to him. A man (got up and) said, "O Allah's Messenger (ﷺ)! He is speaking the truth, and the spoils of the killed man are with me. So please compensate him on my behalf." On that Abu Bakr As-Siddiq said, "No, by Allah, he (i.e. Allah's Messenger (ﷺ) ) will not agree to give you the spoils gained by one of Allah's Lions who fights on the behalf of Allah and His Apostle." The Prophet (ﷺ) said, "Abu Bakr has spoken the truth." So, Allah's Messenger (ﷺ) gave the spoils to me. I sold that armor (i.e. the spoils) and with its price I bought a garden at Bani Salima, and this was my first property which I gained after my conversion to Islam.

Sahih al-Bukhari Book 57, Hadith 50 Next Hadith → `Umar bin Al-Khattab said, "O Allah's Messenger (ﷺ)! I vowed to observe I`tikaf for one day during the Prelslamic period." The Prophet (ﷺ) ordered him to fulfill his vow. `Umar gained two lady captives from the war prisoners of Hunain and he left them in some of the houses at Mecca. When Allah's Messenger (ﷺ) freed the captives of Hunain without ransom, they came out walking in the streets. `Umar said (to his son), "O `Abdullah! See what is the matter." `Abdullah replied, "Allah's Messenger (ﷺ) has freed the captives without ransom." He said (to him), "Go and set free those two slave girls." (Nafi` added:) Allah's Apostle did not perform the `Umra from Al-Jarana, and if he had performed the `Umra, it would not have been hidden from `Abdullah.

Sahih al-Bukhari Book 57, Hadith 52