Musnad Ahmad 32:529

Yunus narrated to us, Layth narrated to us, from Yazid—meaning Ibn al-Had—from ‘Amr, from Anas, who said: I heard the Messenger of Allah (ﷺ) say: "I am the first of the people for whom the earth will split open from my skull on the Day of Resurrection, and it is no boast. And I will be given the Banner of Praise, and it is no boast. And I am the master of the people on the Day of Resurrection, and it is no boast. And I am the first to enter Paradise on the Day of Resurrection, and it is no boast." "And I will come to the gate of Paradise and take hold of its ring, and they will say: 'Who is this?' I will say: 'I am Muhammad.' They will open for me, and I will enter. Then the Compeller (al-Jabbar) will be facing me, so I will prostrate to Him. He will say: 'Raise your head, O Muhammad, and speak, for you will be heard; and say, for it will be accepted from you; and intercede, for you will be granted intercession.' I will raise my head and say: 'My nation, my nation, O Lord.' He will say: 'Go to your nation, and whoever you find in his heart the weight of a barleycorn of faith, enter him into Paradise.' So I will go, and whoever I find in his heart that, I will enter him into Paradise. Then the Compeller will be facing me, so I will prostrate to Him. He will say: 'Raise your head, O Muhammad, and speak, for you will be heard; and say, for it will be accepted from you; and intercede, for you will be granted intercession.' I will raise my head and say: 'My nation, my nation, O Lord.' He will say: 'Go to your nation, and whoever you find in his heart half a barleycorn of faith, enter them into Paradise.' So I will go, and whoever I find in his heart the weight of that, I will enter them into Paradise. Then the Compeller will be facing me, so I will prostrate to Him. He will say: 'Raise your head, O Muhammad, and speak, for you will be heard; and say, for it will be accepted from you; and intercede, for you will be granted intercession.' I will raise my head and say: 'My nation, my nation.' He will say: 'Go to your nation, and whoever you find in his heart the weight of a mustard seed of faith, enter him into Paradise.' So I will go, and whoever I find in his heart the weight of that, I will enter them into Paradise." And Allah will finish the reckoning of the people, and those who remain of my nation will be entered into the Fire with the people of the Fire. The people of the Fire will say: "What did it avail you that you used to worship Allah, associating nothing with Him?" The Compeller will say: "By My Might, I will surely free them from the Fire." So He will send to them, and they will come out having been scorched. They will enter the River of Life, and they will sprout in it as a seed sprouts in the silt of a flood. It will be written between their eyes: "These are the freed ones of Allah." Then they will be taken away and entered into Paradise, and the people of Paradise will say to them: "These are the Hell-dwellers." The Compeller will say: "Rather, these are the freed ones of the Compeller."