The Ten Commandments are part of the OT Law, but NT authors do quote or allude to the commandments quite often as being relevant for new covenant Christians (except for one).

In His sermon on the mount (Matthew 6:25-34), Jesus turned the responsibility back to His listeners, reminding them to “seek ...

In Mark 10:45, Jesus spoke of the nature and purpose of his ministry. “For even the Son of Man did not come to be served, but ...