Narrated Sahl ibn al-Hanzaliyyah: The iqamah for the morning prayer was pronounced and the Messenger of Allah ﷺ began to offer prayer while he was looking at the mountain-pass. (Abu Dawud elaborated that the Prophet had sent a horseman to the mountain-pass at night in order to keep watch. )
Hadith Referenceسنن ابي داود / أبواب تفريع استفتاح الصلاة / 916
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده حسن, صححه ابن خزيمة (487 وسنده حسن)
Hadith Takhrij« تفرد بہ أبو داود،(تحفة الأشراف: 4651) (صحیح) »