Sahih al-Bukhari 2894
صحيح البخاري#2894SahihNarrated Anas bin Malik:Um Haram told me that the Prophet (ﷺ) one day took a midday nap in her house. Then he woke up smiling. Um Haram asked, "O Allah's Messenger (ﷺ)! What makes you smile?" He replied "I was astonished to see (in my dream) some people amongst my followers on a sea-voyage looking like kings on the thrones." She said, "O Allah's Messenger (ﷺ)! Invoke Allah to make me one of them." He replied, "You are amongst them." He slept again and then woke up smiling and said the same as before twice or thrice. And she said, "O Allah's Messenger (ﷺ)! Invoke Allah to make me one of them." And he said, "You are amongst the first batch." 'Ubada bin As-Samit married her (i.e. Um Haram) and then he took her for Jihad. When she returned, an animal was presented to her to ride, but she fell down and her neck was broken
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: 56:109