Sahih al-Bukhari · Hadith 6031

Good Manners and Form (Al-Adab)

Narrated Anas bin Malik: The Prophet (ﷺ) was not one who would abuse (others) or say obscene words, or curse (others), and if he wanted to admonish anyone of us, he used to say: "What is wrong with him, his forehead be dusted