CC Madhya 8.55
eka-bhṛtya-saṅge rāya mililā āsiyā
A Vaiṣṇava who is supposed to be advanced in spiritual understanding — be he a householder or a sannyāsī — must bathe three times a day: morning, noon and evening. When one is engaged in the service of the Deity, he must especially follow the principles of the Padma Purāṇa and take regular baths. He should also, after bathing, decorate his body with the twelve tilakas.