"因受罚而丧失的" can be translated into English as "lost due to punishment" or "forfeited as a result of punishment", depending on the specific context and the nuance you want to convey.
"Lost due to punishment" is straightforward and commonly used, indicating that something was lost as a direct consequence of being punished.
"Forfeited as a result of punishment" is slightly more formal and emphasizes the voluntary or involuntary surrender of something as a result of the punishment.