[2:199] Then press on from where the people press on, and seek God's forgiveness; God is Forgiving, Merciful.
The allusion in it is that you do not know yourself by that which distinguishes you from others outwardly - not by any manner of dressing or patched clothing you put on. Rather, you are like any other human being. When the thought comes to you that you have done something, or that anything is through you, for you or with you, seek God's forgiveness and renew your faith for it is a hidden idolatry (shirk) which infects your heart.