Riyad as-Salihin
Riyad as-Salihin 1515
The Prohibition of Backbiting and the Commandment of Guarding one's Tongue
Arabic hadith text
وعنه عن النبي صلى الله عليه وسلم قال: "إن العبد ليتكلم بالكلمة من رضوان الله تعالى ما يُلقي لها بالا يرفعه الله بها درجات، وإن العبد ليتكلم بالكلمة من سخط الله تعالى لا يُلقي لها بالا يَهوي بها في جهنم". ((رواه البخاري)).
Translation
Abu Hurairah (May Allah be pleased with him) reported
The Prophet (ﷺ) said, "A man utters a word pleasing to Allah without considering it of any significance for which Allah exalts his ranks (in Jannah); another one speaks a word displeasing to Allah without considering it of any importance, and for this reason he will sink down into Hell."[Al-Bukhari].