Before performing any rituals, prescribed by Islam, one should cleanse one’s body and dress). The place of worship and environment should be clean.
Before performing prayers or starting for pilgrimage, one has to make ablution (Wudhu). If he or she is in a state of unclean after having had a lawful intimate intercourse or post-natal period or other reasons, he or she has to take a complete bath by pouring clean water over the whole body.
In the case of daily prayer, every Muslim has to clean his/her private parts, face, hand, feet, mouth, nose and ears at least five times every day for the five daily prayers. This also reminds him/her to keep his/ her soul clean from unlawful deeds.
Cleanliness is not in the physical sense only. The body should be purified as well from evil doings that might harm his relationship with others and with Allah. He has to clean his mind from bad intentions or committing unlawful acts. He has to clean his heart from jealousy, hypocrisy and other evil desires. He has to embody hope, truthfulness, forgiveness, compassion, holiness, the sense of brotherliness, neighbourliness and other noble qualities.
He has to pay special attention to his diet against an unhealthy food medically and religiously. He has to keep his eyes, ears, and tongue from evils. These are among the noble characteristics as exemplified by Prophet Muhammad Sallallahu Alayhi Wasallam.
To clean the wealth, Islam instituted the Zakah system (way of purifying wealth). A person whose wealth has reached a certain point is obligated to pay Zakah. (Alms) which is a duty enjoined by Allah and undertaken by Muslims in the interest of society as a whole.
Among the great virtues of Islam is the command to do good and the prohibition to do evil. The good should be preserved and the evil should be discarded. In short, Islam is actually composed of a series of commands and prohibitions. All the commands and prohibitions are for the good of humanity. Allah the Most Knowing, the Most Merciful, did not decree any law and regulations but for the good and benefit of his creatures.
The prohibition was decreed because of its evil implications to humanity. The evils were created to test the human conscience and challenge their freewill in choosing between right and wrong.
All the commands and prohibitions from Allah as transmitted through His Prophet Muhammad Sallallahu Alayhi Wasallam was intended to purify the human soul in order to live a pure and clean life adored by Allah and human genesis.