Anniyan (2005) is a Tamil movie which was dubbed into Telugu as Aparichitudu and Aparichit in Hindi. It is based on split personality. Vikram plays three characters Ambi, Remo and Anniyan (Aparichitudu and Aparichit in Telugu and Hindi respectively).
Due to frustration caused due to public negligence, Ambi develops two other personalities without his knowledge. Anniyan decides to punish criminals, irresponsible and lazy citizens as they are punished in Naraka i.e., Hindu equivalent of hell. He starts punishing such people when they come across him according to punishments laid down in Garuda Purana. Every time he sentences punishment i.e., killing he says a verse from the Bhagavad Gita. Bhagavad Gita is a dialogue between Krishna and Arjuna. Quoting from holy-bhagavad-gita.org:
sarvadharmānparityajya māmekaṃ śaraṇaṃ vraja |
ahaṃ tvāṃ sarvapāpebhyo mokṣayiṣyāmi mā śuca: || Bhagavad Gita 18.66||
Translation : Abandon all varieties of dharmas and simply surrender unto me alone. I shall liberate you from all sinful reactions; do not fear.
Why does Anniyan say this shloka/verse before killing the criminals or sinners?