Whenever a beggar or a person in need of something came to the Prophet (ﷺ) , he used to say (to his companions), "Intercede (for him) and you will be rewarded for that, and Allah will fulfill what He will through His Apostle's tongue."
Sahih al-Bukhari Book 97, Hadith 102
← Previous Hadith Allah's Messenger (ﷺ) said, "While I was sleeping, I saw myself (in a dream) standing by a well. I drew from it as much water as Allah wished me to draw, and then Ibn Quhafa (Abu Bakr) took the bucket from me and drew one or two buckets, and there was weakness in his drawing----may Allah forgive him! Then `Umar took the bucket which turned into something like a big drum. I had never seen a powerful man among the people working as perfectly and vigorously as he did. (He drew so much water that) the people drank to their satisfaction and watered their camels that knelt down there. (See Hadith No. 16, Vol. 5)

Sahih al-Bukhari Book 97, Hadith 101 Next Hadith → The Prophet (ﷺ) said, "None of you should say: 'O Allah! Forgive me if You wish,' or 'Bestow Your Mercy on me if You wish,' or 'Provide me with means of subsistence if You wish,' but he should be firm in his request, for Allah does what He will and nobody can force Him (to do anything).

Sahih al-Bukhari Book 97, Hadith 103