Shiva Purana
तत्र द्रव्याणि मनसा कल्पयित्वा विशोध्य च ॥ ध्यात्वा विनायकं देवं पूजयित्वा विधानतः ॥ ३ ॥
After imagining the ingredients in the sacrificial fire, one should purify them. Having meditated on Lord Vinayaka and worshiped him in accordance with the prescribed rituals.
english translation
tatra dravyANi manasA kalpayitvA vizodhya ca ॥ dhyAtvA vinAyakaM devaM pUjayitvA vidhAnataH ॥ 3 ॥
hk transliteration by Sanscript