Although wudu and ghusl are related to physical...
Although wudu and ghusl are related to physical purification but there is a more sublime reason underlying these two ritual ablutions-they serve as a reminder to and gateway of spiritual purification.
In suratu 'l-Baqarah, after talking about ghusl hayz , the Qur'an says, “Surety Allah loves those who often turn to Him, and He also loves those who cleanse themselves.” (2:222) In another verse, after explaining the rules of wudu and ghusl , the Qur' an says, “Allah does not desire to make any impediment for you; but He desires to cleanse you, and that He may complete His blessings upon you; haply you may be grateful.” (5:6) We find two different themes in both these verses: First: Allah loves those who cleanse themselves, and that He desires to cleanse us.