Narrated Zaid bin Aslam:
"I heard 'Umar bin Al-Khattab saying: 'We were ordered by the Messenger of Allah (ﷺ) to give in charity, and that coincided with a time in which I had some wealth, so I said, "Today I will beat Abu Bakr, if ever I beat him."' So I came with half of my wealth, and the Messenger of Allah (ﷺ) said: "What did you leave for your family?" I said: "The like of it." And Abu Bakr came with everything he had, so he said: "O Abu Bakr! What did you leave for your family?" He said: "I left Allah and His Messenger for them." I said: '[By Allah] I will never be able to beat him to something.'"
English reference: Vol. 1, Book 46, Hadith 3675
Arabic reference: Book 49, Hadith 4038