It is reported from the Companion Jubayr b. Muṭʿim – Allāh be pleased with him – that he said:
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:
Those who follow the Messenger, the unlettered prophet, whom they find written in what they have of the Torah and the Gospel, who enjoins upon them what is right and forbids them what is wrong and makes lawful for them the good things and prohibits for them the evil and relieves them of their burden and the shackles which were upon them. So they who have believed in him, honored him, supported him and followed the light which was sent down with him – it is those who will be the successful.
Meaning of Al-Aʿrāf: 157.