The Prophet ﷺ gave him a Dinar to buy him a sheep with it. He bought two sheep with it, then sold one of them for a Dinar and brought him a Dinar and a sheep. The Prophet ﷺ supplicated for blessing in his trade, and after that, even if he had bought dirt, he would have made a profit on it.
أن النبي ﷺ أعطاه دينارا يشتري له به شاة، فاشترى له به شاتين، فباع إحداهما بدينار، وجاءه بدينار وشاة، فدعا له بالبركة في بيعه، وكان لو اشترى التراب لربح فيه.
Bukhari narrated it in the Book of Virtues (3642), from Ali bin Abdullah, who said, Sufyan informed us, Shabib bin Gharqada narrated to us, saying, I heard the tribe narrating from Urwa, and he related it.Sufyan said, Hasan bin Umara brought us this hadith from him, saying that Shabib had heard it from Urwa. So I went to Shabib, and he said, "I did not hear it from Urwa. I heard the tribe reporting it from him, but I did hear him say, I heard the Prophet ﷺ say, 'Goodness is tied to the forelocks of horses until the Day of Resurrection.'" He said, I saw seventy horses in his house. Sufyan said, he would buy a sheep for him as though it were a sacrificial animal.Bukhari intended by this to show the weakness of Hasan bin Umara's narration, and that Shabib had not heard this part from Urwa but rather heard it from the tribe, from Urwa, though he had heard him say, "Goodness is tied to the forelocks of horses." However, some scholars of hadith, and many jurists, held that a hadith narrated by a group is acceptable even if its members are not individually named, since a group is more reliable in preserving accuracy than a single person.Nevertheless, it has another chain of transmission. Abu Lubayd narrated from Urwa Bariqi, who said, "The Messenger of Allah gave me a dinar to buy him a sheep." And he related the hadith. He said, he would then go out to the Kunasah of Kufa, where he would make a great profit, so that he became one of the wealthiest people of Kufa.Tirmidhi narrated it (1258), and the wording given is his, and Abu Dawud (3385), though he did not give its wording, saying instead, "Its wording differs." And Ibn Majah (2402), who referred to Sufyan's wording as found in Bukhari's version. All of them narrated it through Saeed bin Zayd, from Zubayr bin Khurayt, from Abu Lubayd Lammaza bin Zabbar, from Urwa bin Abu Jaad Bariqi... and he related the hadith.Its chain is hasan, on account of some discussion regarding Saeed bin Zayd, who is the brother of Hammad bin Zayd, though his hadith is graded hasan. He was corroborated by Harun Aawar Muqri in Tirmidhi's version. And Abu Lubayd is trustworthy.The Hafiz relates in Talkhis (5/3), quoting Munziri and Nawawi, that its chain is hasan sahih, since it comes through two routes. Ibn Kathir said, "Its chain is good," though Shafii said, "This hadith is not established." Some scholars held this view, among them Ahmad and Ishaq, as Tirmidhi stated.Similar in meaning is what was narrated from Hakeem bin Hizam, that the Messenger of Allah sent a dinar with him to buy him a sacrificial animal. He bought it for a dinar and sold it for two dinars. He then went back and bought him a sacrificial animal for one dinar, and brought the other dinar to the Prophet, who gave it away in charity and prayed for him that his trade be blessed.Abu Dawud narrated it (3386) from Muhammad bin Kathir Abdi, who said, Sufyan informed us, Abu Husayn narrated to me, from an elderly man among the people of Madinah, from Hakeem bin Hizam, and he related it. Its chain contains an unidentified man. However, Abu Bakr bin Ayyash differed from Sufyan, narrating from Abu Husayn, from Habib bin Abu Thabit, from Hakeem bin Hizam, and he related the hadith.Tirmidhi narrated it (1257) from Abu Kurayb, from Abu Bakr bin Ayyash, thereby identifying the unnamed man as Habib bin Abu Thabit, except that he had not heard it from Hakeem bin Hizam, as Tirmidhi stated. So there is a break in the chain. Ibn Kathir said the same in Irshad Faqih (64/2).