Narrated Jundub:
A desert Arab came and making his camel kneel and tethering it, entered the mosque and prayed behind the Messenger of Allah (ﷺ). When The Messenger of Allah (ﷺ) had given the salutation, he went to his riding beast and, after untethering and riding it, he called out: O Allah, show mercy to me and to Muhammad and associate no one else in Thy mercy to us. The Messenger of Allah (ﷺ) then said: Do you think that he or his camel is farther astray? Did you not listen to what he said? They replied: Certainly.
