(24) باب النَّهْىِ أَنْ يُسَافَرَ بِالْمُصْحَفِ إِلَى أَرْضِ الْكُفَّارِ إِذَا خِيفَ وُقُوعُهُ بِأَيْدِيهِمْ
It has been narrated on the authority of Ibn 'Umar who said:
The Messenger of Allah (ﷺ) forbade that one should travel to the land of the enemy taking the Qur'an with him.
Reference: Sahih Muslim 1869 a
In-book reference: Book 33, Hadith 135
USC-MSA web (English) reference(deprecated numbering scheme): Book 20, Hadith 4607