Ruling on a child who threw a rock and hit a boy in his eye but did not show himself

Q: When my brother was seven years old, he was playing with a group of children and was on a tree. He took a stone and threw it at a boy, causing him eye damage. However, until now my brother has not confessed that he did this. The victim is now an adult and he still does not know who threw the stone at him. Is there a Shar`y (Islamically lawful) ruling on this act? What can we do?

A: Your brother should ask the victim to forgive him or reconcile with him and discuss the monetary compensation he would like to take. (Part No. 21; Page No. 264) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.