Arthashastra
त्रि रात्र उपोषितः पुष्येण शस्त्र हतस्य शूल प्रोतस्य वा पुंसः शिरः कपाले मृत्तिकायां तुवरी रावास्य उदकेन सेचयेत् ॥
Having fasted for three nights, one should on the day of the star of Pushya fill with soil the skull of a man killed with weapons or put to the gallows, and, planting in it valli (vallari ?) plants, should irrigate them with water.
english translation
tri rAtra upoSitaH puSyeNa zastra hatasya zUla protasya vA puMsaH ziraH kapAle mRttikAyAM tuvarI rAvAsya udakena secayet ॥
hk transliteration by Sanscript