‏الإمارة : Hadeeth No:4608 It has been narrated on the authority of Abdullah b. Umar that the Messenger of Allaah (sallAllaahu alayhi wa sallam) used to forbid that one should travel to the land of the enemy taking the Qur'an (with him) lest it should fall into the hands of the enemy....

‏الصلاة : Hadeeth No:1098 Zaid b. Arqam reported: We used to talk while engaged in prayer and a person talked with a companion on his side in prayer till (this verse) was revealed:" And stand before Allaah in devout obedience" (ii, 238) and we were commanded to observe silence (in prayer) and were forbidden to speak....