That he heard Allah's Messenger (ﷺ) saying, "A slave of Allah may utter a word without thinking whether it is right or wrong, he may slip down in the Fire as far away a distance equal to that between the east."
Reference: Sahih al-Bukhari 6477 In-book : Book 81, Hadith 66 USC-MSA web (English) : Vol. 8, Book 76, Hadith 484 (deprecated)
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