٨٩ - باب استحباب بيان الكلام وإيضاحه للمخاطب وتكريره ليفهم إذا لم يفهم إلا بذلك

From Anas (may Allah be pleased with him): when the Prophet ﷺ spoke a word, he would repeat it three times so that it would be understood from him; and when he came upon a group of people and greeted them, he would greet them three times. Narrated by al-Bukhārī.

And from ʿĀʾishah (may Allah be pleased with her), who said: The speech of the Messenger of Allah ﷺ was clear and distinct, understood by everyone who heard it. Narrated by Abū Dāwūd.