Arthashastra
एतेन एव कल्पेन श्वा विधः शल्यकं त्रि कालं त्रिश्वेतम् असंकीर्ण आदहने निखानयेत् ॥
Following the same procedure, one should separately bury in cremation grounds three white and three black dart-like hairs (salyaka) of a porcupine.
english translation
etena eva kalpena zvA vidhaH zalyakaM tri kAlaM trizvetam asaMkIrNa Adahane nikhAnayet ॥
hk transliteration by Sanscript