It wasnarrated from Ibn 'Umar that the Messenger of Allah (ﷺ)forbadetraveling with the Qur'an to the land of the enemy, lest theenemygets hold of it. (RU)
English reference (RU): Vol. 4, Book 24, Hadith 2879 (RU)
Arabic reference (RU): Book 24, Hadith 2989 (RU)