Allah commands Muslims to purify themselves inwardly from the sin of shirk as well as from diseases, such as envy, pride and hatred, of the heart and outwardly from dirt and all kinds of impurities. Once they do so, they become worthy of His love, as the Qur’an states, “Allah loves those who turn to Him constantly and He loves those who keep themselves pure and clean .”(Soorat Al-Baqarah, 2:222)