The Messenger of Allah ﷺ said, "When one of you is fasting, let him not speak obscenely, nor act wickedly, nor behave foolishly. And if someone treats him foolishly, let him say, 'I am a man who is fasting.'"
و قال أسود بهذا الإسناد قال قال رسول الله ﷺ إذا كان يوم صوم أحدكم فلا يرفث ولا يفسق ولا يجهل فإن جهل عليه فليقل إني امرؤ صائم
Its chain includes Abu Husayn, whom we already discussed in the previous hadith, and the chain is sahih. It was narrated by Imam Malik, Bukhari, Muslim, Abu Dawud, and Ibn Majah on the authority of Abu Hurairah, and Suyuti marked it as sahih in Jami Saghir.