Q 36: What is Iman (Faith)?

Q 36: What is Iman (Faith)? 

A--- Faith must be expressed in words and deeds. The words must come from the heart and uttered orally, and this also goes for the deeds, which must also be done by the relating organs of the body. Faith increases when one obeys Allah, and decreases when he sins against Him. Strength of Faith varies from one person to another.