The Shaykh’s mention of the methodology of the people of the Sunnah regarding (making things good and making things bad).

The Shaykh : This is because what the people of the Sunnah agreed upon, and in which they opposed the Mu'tazilah, is that knowledge of the rulings of the Shari'ah and knowledge of what is good and what is bad can only be attained through the Shari'ah. So, if this is a matter agreed upon by the people of the Sunnah, and the Mu'tazilah opposed it by saying that the good is what the intellect makes good and the bad is what the intellect makes bad, the people of the Sunnah refuted them and said: The good is what the Shari'ah makes good and the bad is what the Shari'ah makes bad. So, when we come to this hadith , what is the way to know the good Sunnah: is it the intellect or the Shari'ah? The answer, in a decisive manner, is that it is the Shari'ah. At that point, we say in contrast: How do we know that this Sunnah is bad? Is it the intellect or the Shari'ah? The answer is also the Shari'ah.
So, if we assume that someone claims that a certain Sunnah is a good Sunnah, we say to him: If he brings this proof, we are obligated by the Shari'ah to submit to it. And if he says, as many people say, "Oh brother, the matter is easy and there is nothing to it, and this is an addition, and the addition of good is good" and the like of speech that is the speech of the common people and not the speech of the people of knowledge, then the speech of the people of knowledge, as you have heard, is that the rational making of things good and bad is one of the doctrines of the Mu'tazilah, and for the people of the Sunnah, making things good and bad is the function of the Shari'ah. So we are with the Shari'ah in making things good and making things bad.