The New Testament Law of Love supersedes and fulfills the Old Testament Law. The Ten Commandments are still the valid instructions of the school master of the law but if a person is born-again by the Spirit of God they will not need a school master anymore.
The inner witness of the spirit (the inner man, the born-again spirit) will naturally do no harm to others, especially other believers. Love toward others will not allow you to wish or have ill will towards them.
Love is the perfect law and is unfailing. God is Love and it is His nature breathed into the born-again believer the now rules and guides.
See how it manifests by reading 1 Corinthians 13 in your Bible.