Shiva Purana
अन्यं कमपि चोद्दिश्य कृत्वा वै मारणादिकम् ॥ पश्चात्तापेन संयुक्तः प्रायश्चित्तं समाचरेत् ॥ ६३ ॥
If he performs the rite of Māraṇa etc. against any other person he shall perform expiatory rites after due repentence.
english translation
anyaM kamapi coddizya kRtvA vai mAraNAdikam ॥ pazcAttApena saMyuktaH prAyazcittaM samAcaret ॥ 63 ॥
hk transliteration by Sanscript