It should be noted that it is not permissible to execute a person who made a woman runaway with him. However, if this act causes unrest and riots, and bloody fights continue between families then in this scenario, the Muslim Judge or ruler of Islamic state may get the person executed under penal codes for causing anarchy in land. But if the person and women are passing life after getting married in accordance with Shariah then it s not right to execute them.
Allah knows best
Darulifta Al Ikhlas, Karachi