Michami dhukdam mantra
The phrase "Micchāmi Dukkaḍaṃ" (sometimes spelled Michhami Dukkadam or Michhami Dukkadam) is not a mantra but a Prakrit phrase commonly used in Jainism, especially during the festival of Paryushan and Samvatsari. It means: "May all the evil that has been done be fruitless." More generally, it is used to ask for forgiveness: "If I have caused you any hurt, knowingly or unknowingly, in thought, word, or deed, I seek your forgiveness."
The full traditional phrase is:
> Micchāmi Dukkaḍaṃ > > (मिच्छामि दुक्कडम्)
Some Jains recite an extended version:
> Khamemi Savve Jiva, Savve Jiva Khamantu Me > > Mitti Me Savva Bhuesu, Veram Majjha Na Kenai > > (I forgive all living beings, may all living beings forgive me; I have friendship with all, enmity with none.)
These are not mantras in the ritualistic sense, but are heartfelt expressions of Jain values of forgiveness (Kshamā), non-violence (Ahimsa), and compassion.