Shiva Purana
पूजाद्रव्याणि सर्वाणि प्रोक्षणीपात्रवारिणा ॥ सम्प्रोक्ष्य मूलमंत्रेण शोधयेद्विधिवत्ततः ॥ १३ ॥
He shall purify the materials of worship by means of the water from the vessel Prokṣaṇī sprinkled on them repeating the basic mantra.
english translation
pUjAdravyANi sarvANi prokSaNIpAtravAriNA ॥ samprokSya mUlamaMtreNa zodhayedvidhivattataH ॥ 13 ॥
hk transliteration by Sanscript