1- Allah, the Exalted, says:
(Indeed Allah loves those who continually seek repentance and those who purify themselves.) (2:222).
2- The Prophet (peace and blessings be upon him) said:
"Cleanliness is equal to half of Iman (Faith) ..." (Muslim).
3- The Prophet (peace and blessings be upon him) said: "The following verse was revealed concerning the people of Quba:
(Wherein are men who love to purify themselves. And Allah loves those who purify themselves) (9:108).
They used to cleanse themselves with water (after answering the call of nature), so this verse was revealed.' (Tirmidthi).
4- The Prophet (peace and blessings be upon him) said:
" Bilal, tell me the most promising deed you have done in Islam, for I heard the sound of your footsteps in Jannah (Heavenly Abode)!" Bilal answered: "I haven't done an act more hopeful to me than this: I have never performed Wudhu (ablution) during the day or night except that I performed what I could of voluntary prayers after it." (Bukhari).
5- The Prophet (peace and blessings be upon him) said:
"Shall I not inform you of a deed with which Allah effaces the sins and elevates one's rank?" They replied:
"Yes, O Messenger of Allah!" He said, "Performing Wudhu in a complete manner even if it is difficult, walking towards the Masaajid and waiting for the next prayer after observing one..." (Muslim).