Sahih al-Bukhari 2430
صحيح البخاري#2430SahihNarrated 'Abdur-Rahman bin Hurmuz:Abu Hurairah (ra) said, "Allah's Messenger (ﷺ) mentioned an Israeli man." Abu Hurairah then told the whole narration). (At the end of the narration it was mentioned that the creditor) went out to the sea, hoping that a boat might have brought his money. Suddenly he saw a piece of wood and he took it to his house to use as firewood. When he sawed it, he found his money and a letter in it. [See hadith No. 2291 for details]
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 45:5