The Prophet (ﷺ) gave him a dinar to buy a sacrificial animal or a sheep. He bought two sheep, sold one of them for a dinar, and brought him a sheep and dinar. So he invoked a blessing on him in his business dealing, and he was such that if had he bought dust he would have made a profit from it.
Reference: Sunan Abi Dawud 3384 In-book : Book 23, Hadith 59 English translation : Book 22, Hadith 3378
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