The Prophet ﷺ was the finest of people, the most generous of people, and the bravest of people.One night the people of Medina were alarmed by a sound they heard. The Prophet ﷺ met them riding a horse belonging to Abu Talha, bareback, with his sword slung around his neck.He said, "Do not be afraid, do not be afraid."The Prophet ﷺ then said of the horse, "I found it to be like a sea."
حدثنا قتيبة حدثنا حماد بن زيد عن ثابت
كان النبي ﷺ من أحسن الناس وأجود الناس وأشجع الناس قال وقد فزع أهل المدينة ليلة سمعوا صوتا قال فتلقاهم النبي ﷺ على فرس لأبي طلحة عري وهو متقلد سيفه فقال لم تراعوا لم تراعوا فقال النبي ﷺ وجدته بحرا يعني الفرس
Agreed upon [by Bukhari and Muslim]. Bukhari narrated it in the Book of Jihad and Expeditions, Chapter: "If They Are Alarmed at Night," no. 3040, from Qutayba, and Muslim, no. 2307, from the hadith of Hammad bin Zayd, with this wording.