The Kitáb-i-Aqdas - The Most Holy Book
Index term: in Persian pools, under Water
k106.
It hath been enjoined upon you to pare your nails, to bathe yourselves each week in water that covereth your bodies, and to clean yourselves with whatsoever ye have formerly employed. Take heed lest through negligence ye fail to observe that which hath been prescribed unto you by Him Who is the Incomparable, the Gracious. Immerse yourselves in clean water; it is not permissible to bathe yourselves in water that hath already been used. See that ye approach not the public pools of Persian baths; whoso maketh his way toward such baths will smell their fetid odour ere he entereth therein. Shun them, O people, and be not of those who ignominiously accept such vileness. In truth, they are as sinks of foulness and contamination, if ye be of them that apprehend. Avoid ye likewise the malodorous pools in the courtyards of Persian homes, and be ye of the pure and sanctified. Truly, We desire to behold you as manifestations of paradise on earth, that there may be diffused from you such fragrance as shall rejoice the hearts of the favoured of God. If the bather, instead of entering the water, wash himself by pouring it upon his body, it shall be better for him and shall absolve him of the need for bodily immersion. The Lord, verily, hath willed, as a bounty from His presence, to make life easier for you that ye may be of those who are truly thankful.
n131.
approach not the public pools of Persian baths
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.
n132.
Avoid ye likewise the malodorous pools in the courtyards of Persian homes
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.