Musannaf Ibn Abi Shayba 27:143

Mu'awiyah ibn Hisham narrated to us, he said: Sufyan narrated to us, from Mukhtar ibn Fulful, from Anas ibn Malik, he said: The Messenger of Allah (may Allah bless him and grant him peace) said: "I am the most followed of the prophets on the Day of Resurrection, and I am the first to knock on the door of Paradise."