(129) باب السَّفَرِ بِالْمَصَاحِفِ إِلَى أَرْضِ الْعَدُوِّ
Narrated `Abdullah bin `Umar:
Allah's Messenger (ﷺ) forbade the people to travel to a hostile country carrying (copies of) the Qur'an.
Reference: Sahih al-Bukhari 2990
In-book reference: Book 56, Hadith 199
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 4, Book 52, Hadith 233