It was narrated that 'Adiyy bin Hatim said: "Two men recited a Tashahhud before the Prophet and one of them said: “Whoever obeys Allah and His Messenger has been guided aright and whoever disobeys them has gone astray.' The Messenger of Allah said: “What a bad speaker you are””"
SahihSahihSahih MuslimBook 26 · Hadith 84