"JIHAD. “Lit. “An effort, or a striving.” A religious war with those who are unbelievers in the mission of Muhammad. It is an incumbent religious duty, established in the Qur’an and in the Traditions as a divine institution, and enjoined specially for the purpose of advancing Islam and of repelling evil from Muslims."
January 1, 1970
https://en.wikiquote.org/wiki/Jihad