Shiva Purana
प्रथमं तु मया तत्र प्रतिज्ञा च कृता प्रभो ॥ तस्मान्मया च गन्तव्यं भवद्भ्यां स्थीयतामिह ॥ ७१ ॥
First of all I made a promise there, my lord. Therefore I must go and you two stay here.
english translation
prathamaM tu mayA tatra pratijJA ca kRtA prabho ॥ tasmAnmayA ca gantavyaM bhavadbhyAM sthIyatAmiha ॥ 71 ॥
hk transliteration by Sanscript