It was narrated from Ibn ‘Umar that the Messenger of Allah (ﷺ) used to forbid traveling with the Qur’an to the land of the enemy, lest the enemy gets hold of it.
Hadith ReferenceSunan Ibn Majah / The Chapters on Jihad / Hadith: 2880
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم