كتاب الجهاد
Read the English translation first, with the original Arabic directly underneath.
Narrated Buraydah ibn al-Hasib:
While the Messenger of Allah (ﷺ) was walking a man who had an ass came to him and said: Messenger of Allah, ride; and the man moved to the back of the animal. The Messenger of Allah (ﷺ) said: No, you have more right to ride in front on your animal than me unless you grant that right to me. He said: I grant it to you. So he mounted.
لاَ أَنْتَ أَحَقُّ بِصَدْرِ دَابَّتِكَ مِنِّي إِلاَّ أَنْ تَجْعَلَهُ لِي