Shiva Purana
कुर्यात्तस्य शिखाच्छेदं सह सूत्रेण देशिकः ॥ ततस्तां गोमये न्यस्य शिवाग्नौ जुहुयाच्छिखाम् ॥ ३९ ॥
The priest should cut off the head of the demon with a thread Then one should place her in cow dung and offer her head in the fire of Lord Shiva.
english translation
kuryAttasya zikhAcchedaM saha sUtreNa dezikaH ॥ tatastAM gomaye nyasya zivAgnau juhuyAcchikhAm ॥ 39 ॥
hk transliteration by Sanscript