Mantra for taking bath by mind (mānasa-snāna)
apavitraḥ pavitro vā
sarvāvasthāṁ gato ’pi vā
yaḥ smaret puṇḍarīkākṣaṁ
sa bāhyābhyantara-śuciḥ
[Garuḍa Purāṇa]
Whether one is contaminated, pure or in any condition
or stage of life, if one remembers the lotus-eyed lord,
puṇḍarīkākṣa, Śrī kṛṣṇa, one becomes pure both
externally and internally.