A believer is a clean person. First of all faith cleanses his soul. Consequently his appearance becomes pure as well. His religious thinking makes him a person who loves cleanliness.
A believer performs his ablutions before praying five times a day by washing his face, hands and feet. He takes a bath daily to purify his body. His clothes may be simple, but he always likes to wear well laundered clothes.
Along with this he likes to keep his home clean. Therefore, he cleans his home daily and keeps all his things in their proper places. All these duties become part of his daily life.
A believer does not rest content until he has set all things right, from his body to his home.
This taste for cleanliness is not limited only to his home and body. It also extends outside his home to his neighbors. He begins to want his whole environment to be clean, wherever he stays. So he takes special care to see that he and his family members do not defile their surroundings. This training he gives to others as well. Thus he is not satisfied until and unless he has succeeded in bringing into existence a clean atmosphere all around.
For a common person cleanliness is only cleanliness. But for a believer, cleanliness, besides being simply cleanliness is also an act of worship, for he knows that God likes clean and pure persons.
Furthermore, the faith of the believer is a guarantee that when he has cleaned his body his soul is likewise cleaned. That is why at the moment of washing himself clean, he utters these words in prayer: To God, purify my inner self along with my outer body. In this way, the earnest prayer makes his soul clean too, like his body
Source: Simple Wisdom