I was a blacksmith In the Pre-Islamic period of ignorance, and 'Asi bin Wail owed me some money. I went to him to demand it, but he said to me, "I will not pay you unless you reject faith in Muhammad." I replied, "By Allah, I will never disbelieve Muhammad till Allah let you die and then resurrect you." He said, "Then wait till I die and come to life again, for then I will be given property and offspring and will pay your right." So, thus revelation came: "Have you seen him who disbelieved in Our signs and yet says, 'I will be given property and offspring?' " (19.77)
Sahih al-Bukhari Book 44, Hadith 15
← Previous Hadith That `Abdullah bin Abi Hadrad Al-Aslami owed him some debt. Ka`b met him and caught hold of him and they started talking and their voices grew loudest. The Prophet (ﷺ) passed by them and addressed Ka`b, pointing out to him to reduce the debt to one half. So, Ka`b got one half of the debt and exempted the debtor from the other half.

Sahih al-Bukhari Book 44, Hadith 14 Next Hadith → I found a purse containing one hundred Diners. So I went to the Prophet (and informed him about it), he said, "Make public announcement about it for one year" I did so, but nobody turned up to claim it, so I again went to the Prophet (ﷺ) who said, "Make public announcement for another year." I did, but none turned up to claim it. I went to him for the third time and he said, "Keep the container and the string which is used for its tying and count the money it contains and if its owner comes, give it to him; otherwise, utilize it." The sub-narrator Salama said, "I met him (Suwaid, another sub-narrator) in Mecca and he said, 'I don't know whether Ubai made the announcement for three years or just one year.' "

Sahih al-Bukhari Book 45, Hadith 1