Kharija b. Hudhafa told of God’s Messenger coming out to them and saying, “God has given you an extra prayer which is better for you than the high-bred camels,* the witr, which God has appointed for you between the evening prayer and the daybreak.”
* Literally “the red ones of the camels.” These were considered to be the best quality.
Tirmidhi and Abu Dawud transmitted it.