The Messenger of Allah, peace and blessings be upon him, said, “A man will be brought on the Day of Resurrection and cast into the Hellfire, and his intestines will pour forth in Hell. He will go around them as a donkey around a millstone. The people of Hell will gather around him and say: What has happened to you? Were you not enjoining good and forbidding evil? He will say: Of course, I used to enjoin good but I did not practice it myself, and I used to forbid evil but I practiced it myself.” Source: Ṣaḥīḥ al-Bukhārī 3094, Ṣaḥīḥ Muslim 2989