Handbook of Liturgical Practice of the Russian Church Abroad
Each item of a cleric’s vestments, like each vessel and sacred object used in the Altar, are blessed with a special rite, and with holy water, prior to their first use. They are thus ‘consecrated objects’, used only for divine service: they must be treated with the same reverence that we treat icons and other sacred objects — kept in pristine condition, handled delicately, and kept pure.
Attention should be maintained at all times, never to let any consecrated object touch the floor. If it does (i.e. if a vestment is dropped on the floor, or some other sacred item), we do not simply pick it up and carry on as if nothing has happened. The object that touched the floor must be taken to the Priest immediately, and he will bless it once more with holy water and a short prayer (though not the full rite of blessing as at its first use) before it is again used. He may also assign to us some penance (epitimia) in response to our inattentiveness, which we should receive with humility and love.