Arthashastra
ततः शासनम् अभिशस्तस्य प्रेषयेत् "भूयः कुरु ततः पण शेएषम् अवाप्स्यसि" इति ॥
The man who is employed to commit such murders may be asked to repeat his work again on the condition of his receiving the balance due to him.
english translation
tataH zAsanam abhizastasya preSayet "bhUyaH kuru tataH paNa zeeSam avApsyasi" iti ॥
hk transliteration by Sanscript