ʿAqīdah
عقيدة
إحسان
Iḥsān
Definition
Excellence in worship — to worship Allah as though you see Him, and if you do not see Him, to know He sees you.
Example
Iḥsān in ṣalāh is khushūʿ; in speech it is avoiding backbiting; in work it is doing the task well even when no one is watching.