No, he can’t be executed for raping his own wife but rather punished by the Judge a suitable punishment.

If a man marries a child and then rapes her, what is the punishment in this life for such a person? Execution?

Punishments | March 11, 2014 7:16 am
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A non-muslim asked me why do we need four witness to punish a rapist? Considering that the rapist won’t raper her in public and it is very difficult to find 4 witnesses for almost every cases
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Can a rape victim forgive the rapist ? Also, What will be the punishment for the rapist if he converts to islam ?