The existence of authoritative interpretations does not preclude the individual from engaging in the study of the Teachings and thereby arriving at a personal interpretation or understanding. A clear distinction is, however, drawn in the Bahá’í Writings between authoritative interpretation and the understanding that each individual arrives at from a study of its Teachings. Individual interpretations based on a person’s understanding of the Teachings constitute the fruit of man’s rational power and may well contribute to a greater comprehension of the Faith. Such views, nevertheless, lack authority. In presenting their personal ideas, individuals are cautioned not to discard the authority of the revealed words, not to deny or contend with the authoritative interpretation, and not to engage in controversy; rather they should offer their thoughts as a contribution to knowledge, making it clear that their views are merely their own. 131. approach not the public pools of Persian baths #106 Bahá’u’lláh prohibits the use of the pools found in the traditional public bath-houses of Persia. In these baths it was the custom for many people to wash themselves in the same pool and for the water to be changed at infrequent intervals. Consequently, the water was discoloured, befouled and unhygienic, and had a highly offensive stench. 132. Avoid ye likewise the malodorous pools in the courtyards of Persian homes #106 Most houses in Persia used to have a pool in their courtyard which served as a reservoir for water used for cleaning, washing and other domestic purposes. Since the water in the pool was stagnant and was not usually changed for weeks at a time, it tended to develop a very unpleasant odour. 133. It is forbidden you to wed your fathers’ wives. #107 Marriage with one’s stepmother is here explicitly prohibited. This prohibition also applies to marrying one’s stepfather. Where Bahá’u’lláh has expressed a law between a man and a woman it applies mutatis mutandis as between a woman and a man unless the context should make this impossible. ‘Abdu’l-Bahá and Shoghi Effendi confirmed that, while stepmothers are the only category of relatives mentioned in the text, this does not mean that all other unions within a family are permissible. Bahá’u’lláh states that it devolves upon the House of Justice to legislate "concerning the legitimacy or otherwise of marrying one’s relatives" (Q and A 50). ‘Abdu’l-Bahá has written that the more distant the blood-relationship between the couple the better, since such marriages provide the basis for the physical well-being of humanity and are conducive to fellowship among mankind. 134. the subject of boys #107 The word translated here as "boys" has, in this context, in the Arabic original, the implication of paederasty. Shoghi Effendi has interpreted this reference as a prohibition on all homosexual relations.