Mishkat al-Masabih 5920

Anas told that on the night when the Prophet was taken up to heaven al-Buraq was brought to him bridled and saddled, but it proved refractory, so Gabriel said to it, "Is it to Muhammad you are doing this? No one more honourable in God's sight than he has mounted you." It then poured with sweat. Tirmidhi transmitted it, saying this is a gharib tradition.