Arthashastra
श्वा विधः शल्यकानि त्रि श्वेतानि, सप्त रात्र उपोषितः कृष्ण चतुर्दश्यां खादिराभिः समिधामिर् अग्निम् एतेन मन्त्रेण अष्ट शत सम्पातं कृत्वा मधु घृताभ्याम् अभिजुहुयात् ॥
Having fasted for seven nights, ॥ one॥ should offer oblations with honey and ghee into the fire ॥ made॥ with eight hundred pieces of khadira firewood, using this mantra, on the fourteenth day of the dark fortnight, ॥ having procured॥ three white porcupine quills.
english translation
zvA vidhaH zalyakAni tri zvetAni, sapta rAtra upoSitaH kRSNa caturdazyAM khAdirAbhiH samidhAmir agnim etena mantreNa aSTa zata sampAtaM kRtvA madhu ghRtAbhyAm abhijuhuyAt ॥
hk transliteration by Sanscript