The forty-first yogic sutra speaks about the body in its heightened state of being, the state in which the sadhaka realises the inner self. Cleanliness here is the key word to such a stage of maturity.

sattvasuddhi purity in the essence of consciousness
sou cheerful, pleasing, benevolent
manasya mind
ekagra concentration, fixity
indriya senses of perception and organs of action
jaya controlled, conquered
atma self, soul
darsana knowledge, vision
yogyatvani fitness to see
ca and also

When the body is cleansed, the mind purified and the senses controlled, joyful awareness needed to realise the inner self, also comes through.

With cleanliness the body becomes the temple of the seer and feels the delight of self-awareness.

When the consciousness is cheerful and compassionate, the seeker becomes ready to receive the knowledge and vision of the soul.