Sahih al-Bukhari 1108
صحيح البخاري#1108SahihNarrated Anas:Allah's Messenger (ﷺ) used to offer these two prayers together on journeys i.e. the Maghrib and the `Isha
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: 18:28