Markandeyapurana 35.25

35.25

spṛṣṭānāmapyasaṃsargairvirathyākardamāmbhasām /
pakveṣṭaracitānāñca medhyatā vāyusaṅgamāt //

After walking along the high road, and after matters of bathing, hunger, drinking, and weariness, one should change one’s clothes and duly rinse out one’s mouth. Bad roads,[3] mud, and water, when one comes into contact with them, are cleaned by leaving them alone; and things made of mud or brick[4] are cleansed by contact with the wind.