September 25

…one of the provisions of that Most Holy Book is "not to indulge one's passions" (see "Synopsis and Codification of the Laws and Ordinances of the Kitáb-i-Aqdas", p. 50). Furthermore, reference should be made to one of the "prohibitions" mentioned on page 47 of the "Synopsis", namely "adultery". This word so appears in this book because entries in a synopsis should by necessity be brief, and by the original word used by Bahá'u'lláh in the Aqdas, i.e., "zina", adultery is generally and mainly intended. However, this by no means covers all the meanings of the concept of "zina" in legal language used in Arabic and Persian. One of the forms of "zina" -- i.e., when the illicit sexual intercourse is performed through force or violence -- is rape or sexual assault.

As to the punishments for such acts as rape, these will be determined in the future by the Universal House of Justice. 
- The Universal House of Justice  (From a letter dated 8 June 1982 written on behalf of the Universal House of Justice to an individual believer; The Compilation of Compilations, vol. I, A Chase and Holy Life)