Carrying the Mus-haf in the pocket is permissible, but it is not permissible for anyone to enter the toilet while carrying it. One must put the Mus-haf in a proper place, as a sign of glorifying and venerating the Book of Allah. (Part No. 4; Page No. 61) If a person is obliged to take it into the bathroom for fear that it might be stolen if left outside, it is permissible for them take it in due to necessity.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.