A Salaf once
narrated:
"
Don't look at how minor the sin is that you committed, but look at the
glory of the One you disobeyed, i.e. Allaah (subhanahu wa ta'ala)."
(A
sin, even if it is a minor one, means disobedience to Allaah, hence defying the
glorification of Allaah and the glorification of Allaah is actually one of the
Principles of Tawheed.)