Arthashastra
त्रि रात्र उपोषितः कृष्ण चतुर् दश्यां पुष्य योगिन्यां श्व पाकी हस्ताद् विलख अवलेखनं क्रीणीयात् ॥
Having fasted for three nights, one should, on the fourteenth day of the dark half of the month, the day being assigned to the star of Pushya, purchase from a low-caste woman (svapáki) vilikhávalekhana (finger nails?).
english translation
tri rAtra upoSitaH kRSNa catur dazyAM puSya yoginyAM zva pAkI hastAd vilakha avalekhanaM krINIyAt ॥
hk transliteration by Sanscript