When taking a food like mango from your neighbor by the person not it and then the person past away when he's wife is their what to do or is there any dua to make to God to erase the sin?

I'm sorry to hear about the situation you're facing. It's important to remember that I am an AI language model and not a religious authority, but I can try to provide some general guidance.

If you have taken something from your neighbor without their permission, it is considered stealing, which is generally considered a sin in many religious traditions. In this situation, it would be advisable to seek forgiveness from your neighbor and return what you have taken. Taking responsibility for your actions and making amends is an important step towards seeking forgiveness.

In terms of making a dua (supplication) to seek forgiveness from God, it is recommended to sincerely repent and ask for forgiveness with a remorseful heart. You can ask for forgiveness directly from God, seeking His mercy and guidance. It is believed that God is forgiving and merciful, and if you genuinely repent and strive to rectify your actions, He may forgive you.

However, it is always best to consult with a religious authority or a trusted spiritual advisor who can provide specific guidance based on your faith tradition. They will be able to offer you more accurate and personalized advice on seeking forgiveness and making amends for your actions.