So what is obligatory is to submit to what occurs in the Book and in the Sunnah with regard to the Names of Allaah and His Attributes as was meant by Allaah and His Messenger, because Allaah knows best about Himself, He the Perfect and Most High, and He knows best about other than Himself. And the most knowledgeable one from the creation about Allaah is the Messenger of Allaah sallAllaahu `alayhi wa sallam. As for us, then our knowledge falls short. There are many things that we do not know related to our own selves with regard to the details of our bodies and the veins and the senses. There are things which we do not know. Do you know the rooh, about the soul? What exactly is it? The intellect, what is it? If you do not know something from your own body, nor something about your own self, then how can you speak about the Self of Allaah the Perfect and Most High, which is not known, except to Him, He, the Perfect.
(یَعۡلَمُ مَا بَیۡنَ أَیۡدِیهِمۡ وَمَا خَلۡفَهُمۡ وَلَا یُحِیطُونَ بِهِۦ عِلۡمࣰا)
He (Allaah) knows whatever is in front of them and whatever is behind them and they do not encompass Him with knowledge
(Soorah TaaHaa (20), aayah 110)
(From Sh Fawzaan’s explanation of Sharh us Sunnah translated by Abu Talhah rahimahullaah)