Shiva Purana
आपोवेत्यभिमंत्र्याथ जलं तेनैव सेचयेत् ॥ ओमापोज्योतिरित्युक्त्वा मानस्तोकेति मंत्रतः॥ २१॥
Then one should chant the mantra 'Apove' and sprinkle the water with it. Saying Oma Apojyoti, chant the mantra Manastoke.
english translation
ApovetyabhimaMtryAtha jalaM tenaiva secayet ॥ omApojyotirityuktvA mAnastoketi maMtrataH॥ 21॥
hk transliteration by Sanscript