The Prophet ﷺ said, "If you speak on Friday, you have engaged in idle talk and led others into it as well."
وبهذا الإسناد عن النبي ﷺ إذا تكلمت يوم الجمعة فقد لغوت وألغيت
Its isnad is sahih. It came before at 7672, and it is found in Ibn Khuzayma 3/153, no. 1804.