It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When it is the Day of Resurrection, a multitude will stand up that will fill the horizon, their light like the sun, and it will be said: The unlettered Prophet (where is his Ummah)? Every prophet will look for it, and it will be said: Muhammad (peace and blessings be upon him) and his Ummah. Then another multitude will stand up that will fill the horizon, their light like the moon on the night of the full moon, and it will be said: The unlettered Prophet? Every prophet will look for it, and it will be said: Muhammad (peace and blessings be upon him) and his Ummah. Then another multitude will stand up that will fill the horizon, their light like a star in the sky, and it will be said: The unlettered Prophet? Every prophet will look for it, and it will be said: Muhammad (peace and blessings be upon him) and his Ummah. Then (Allah Almighty) will give two handfuls and say: This is for you, O Muhammad, and this is from Me for you, O Muhammad. Then the Scale will be set up, and the reckoning will begin."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7749