Jubayr b. Muṭʿim

I once travelled to Shām for trade. When I reached lower Shām a man from the People of the Book met me and asked me, “Is there amongst you a man who is a Prophet?” I replied, “Yes.” He then asked, Would you recognise his image if you saw it?” I replied, “Yes.” He then admitted me into a house in which there were images, but I did not see an image of the Prophet ﷺ. While I was there, another man from them entered upon us and asked us “What are you doing?” So we informed him. He then took us to his home, and as soon as I entered I saw the image of the Prophet ﷺ and it showed a man holding on to the heel of the Prophet ﷺ. I asked, “Who is this man holding his heel?” He replied, “There was no prophet except that after him came another prophet, except this prophet, for there is no prophet after him. And this is the khalīfah after him.” And I saw that it looked like Abū Bakr – Allāh be pleased with him.

Ibn Kathīr, Al-Tafsīr, in the commentary of 7:157