عن أنس بن مالك رضي الله عنه ، قال: لم يكن النبي صلى الله عليه وسلم سبابا ، ولا فحاشا ، ولا لعانا ، كان يقول لأحدنا عند المعتبة: ( ما له ترب جبينه ). رواه البخاري
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Narrated Anas bin Malik, may Allah be pleased with him: The Prophet (may peace be upon him) was neither a Sabbab ( one who would abuse others ) nor a Fahish ( one who speaks bad words ), nor a one who would curse ( others ), and if he wanted to admonish anyone of us, he used to say: ‘’ What is wrong with him, his forehead be dusted‘’
Sahih Al-Bukhari