CC Ādi 4.183

e-deha-darśana-sparśe kṛṣṇa-santoṣaṇa’
ei lāgi’ kare dehera mārjana-bhūsaṇa
Word for word: 
e-deha — of this body; darśana — by sight; sparśe — and touch; kṛṣṇa — of Lord Kṛṣṇa; santoṣaṇa — the satisfaction; ei lāgi’ — for this; kare — they do; dehera — of the body; mārjana — cleaning; bhūṣaṇa — decorating.
“Kṛṣṇa finds joy in seeing and touching this body.” It is for this reason that they cleanse and decorate their bodies.