Sahih al-Bukhari 1029
صحيح البخاري#1029SahihNarrated Anas bin Malik:A bedouin came to Allah's Messenger (ﷺ) on a Friday and said, "O Allah's Messenger ! The livestock, the offspring, and the people have perished." So, Allah's Messenger (ﷺ) raised both his hands invoking Allah (for rain) and the people too raised their hands with Allah's Messenger (ﷺ) invoking Allah (for rain). We had not left the mosque when it started raining. It rained till the next Friday when the same man came to Allah's Messenger (ﷺ) and said, "O Allah's Messenger! The travelers are compelled to postpone their journeys (because of excessive rain) and the roads are overflowed
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: 15:24