"Micchami Dukkadam" is a phrase that people in the Jain religion say to each other during a special time called Paryushan. It's like saying "sorry" or "forgive me" for anything wrong you may have done to someone else.
You know how sometimes you might do something that hurts someone else's feelings, like accidentally taking their toy or saying something mean? When we do things like that, it's important to say sorry and ask for forgiveness.
In the Jain religion, they have a special time each year when they focus on forgiveness and saying sorry to others. During this time, they say "Micchami Dukkadam" to each other as a way of asking for forgiveness.
The words "Micchami Dukkadam" themselves mean "May my faults be forgiven" in the Jain language. It's kind of like saying, "I'm sorry for anything I may have done wrong, and I hope you can forgive me."
So, "Micchami Dukkadam" is a way for people in the Jain religion to show kindness and ask for forgiveness during a special time of the year.