The Prophet ﷺ came to visit me when I was sick, and he was not riding a mule or a mount.
حدثنا عبد الرحمن بن مهدي عن سفيان عن محمد بن المنكدر
جاء النبي ﷺ يعودني ليس براكب بغلا ولا برذونا
Its isnad is sahih. It is found in Bukhari, 7/154 (Shab edition), in the chapter on illness, visiting the sick, and in Abu Dawud, 3/474, no. 3096, and Tirmidhi, 5/691, no. 3851, where he said, hasan sahih.