Al-Kāfi

19. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa ibn ‘Ubayd from Yunus from Hariz from Zurara who said: “I asked Abu ‘Abdillah عليه السلام about lawful and unlawful matters and he said, “Whatever Muhammad صلى الله عليه وعلى آله وسلم has made lawful will remain lawful forever up to the Day of Judgment, and whatever he has made unlawful will remain unlawful forever up to the Day of Judgment. There will be no one other than him and there will come no one other than him. He said that Ali عليه السلام has said, ‘No one has established any innovations without abandoning a Sunnah.”