Sahih al-Bukhari 2990
صحيح البخاري#2990SahihNarrated `Abdullah bin `Umar:Allah's Messenger (ﷺ) forbade the people to travel to a hostile country carrying (copies of) the Qur'an
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: 56:199