One verse

Srimad Bhagavatam 11.27.14

11.27.14

अस्थिरायां विकल्प: स्यात् स्थण्डिले तु भवेद् द्वयम् । स्‍नपनं त्वविलेप्यायामन्यत्र परिमार्जनम् ॥ १४ ॥

asthirāyāṁ vikalpaḥ syāt sthaṇḍile tu bhaved dvayam snapanaṁ tv avilepyāyām anyatra parimārjanam

asthirāyām
in the case of the temporarily installed Deity
vikalpaḥ
an option (as to whether the Deity is to be called and sent away)
syāt
there is
sthaṇḍile
in the case of the Deity traced upon the ground
tu
but
bhavet
do occur
dvayam
these two rituals
snapanam
the bathing
tu
but
avilepyāyām
in the case when the Deity is not made out of clay (or paint or wood)
anyatra
in the other cases
parimārjanam
thorough cleansing, but without water

The Deity that is temporarily established can optionally be called forth and sent away, but these two rituals should always be performed when the Deity is traced upon the ground. Bathing should be done with water except if the Deity is made of clay, paint or wood, in which cases a thorough cleansing without water is enjoined.