Musnad Ahmad Hadith 27239

It is narrated from Wa'il (may Allah be pleased with him) that the Prophet (ﷺ) granted him a piece of land and sent Muawiyah (may Allah be pleased with him) with him so that he could identify the portion. On the way, Amir Muawiyah (may Allah be pleased with him) said to me, "Let me ride behind you." I said, "You cannot sit behind kings." He said, "Then at least give me your shoes." I said, "Consider the shadow of the she-camel as your shoe." Then, when Muawiyah (may Allah be pleased with him) was appointed as the Caliph and I went to him, he seated me with him on the throne and reminded me of the aforementioned incident. He says that at that time I thought, "If only I had let him ride in front of me."