Sahih Muslim, Chapter: Faith (Kitab Al Iman)

that the Messenger of Allah (may peace be upon him) observed: There has never been a Prophet amongst the prophets who was not bestowed with a sign amongst the signs which were bestowed (on the earlier prophets). Human beings believed in it and verily I have been conferred upon revelation (the Holy Qur'an) which Allah revealed to me. I hope that I will have the greatest following on the Day of Resurrection.