Shiva Purana
एतस्मिन्व्यवहारे तु प्रमाणं शशिभास्करौ ॥ त्रिवारं सत्यमित्युक्त्वा हृदयं मे स्पृश प्रिये ॥ २४ ॥
In this deal the witnesses are the moon and the sun. Repeat three times “True” and touch my heart, O beloved.
english translation
etasminvyavahAre tu pramANaM zazibhAskarau ॥ trivAraM satyamityuktvA hRdayaM me spRza priye ॥ 24 ॥
hk transliteration by Sanscript