Śrīmad-Bhāgavatam · Text 11.27.14
Who is speaking and story frame
अस्थिरायां विकल्प: स्यात् स्थण्डिले तु भवेद् द्वयम् ।
स्नपनं त्वविलेप्यायामन्यत्र परिमार्जनम् ॥ १४ ॥
asthirāyāṁ vikalpaḥ syāt
sthaṇḍile tu bhaved dvayam
snapanaṁ tv avilepyāyām
anyatra parimārjanam
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.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.