(6) باب مَنَاقِبُ عُمَرَ بْنِ الْخَطَّابِ أَبِي حَفْصٍ الْقُرَشِيِّ الْعَدَوِيِّ رَضِيَ اللَّهُ عَنْهُ
Narrated Aslam:
Ibn `Umar asked me about some matters concerning `Umar. He said, "Since Allah's Messenger (ﷺ) died. I have never seen anybody more serious, hard working and generous than `Umar bin Al-Khattab (till the end of his life."
Reference: Sahih al-Bukhari 3687
In-book reference: Book 62, Hadith 37
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 57, Hadith 36