The Kitáb-i-Aqdas - The Most Holy Book
Index term: pure, under Water
k74.
God hath decreed, in token of His mercy unto His creatures, that semen is not unclean. Yield thanks unto Him with joy and radiance, and follow not such as are remote from the Dawning-place of His nearness. Arise ye, under all conditions, to render service to the Cause, for God will assuredly assist you through the power of His sovereignty which overshadoweth the worlds. Cleave ye unto the cord of refinement with such tenacity as to allow no trace of dirt to be seen upon your garments. Such is the injunction of One Who is sanctified above all refinement. Whoso falleth short of this standard with good reason shall incur no blame. God, verily, is the Forgiving, the Merciful. Wash ye every soiled thing with water that hath undergone no alteration in any one of the three respects; take heed not to use water that hath been altered through exposure to the air or to some other agent. Be ye the very essence of cleanliness amongst mankind. This, truly, is what your Lord, the Incomparable, the All-Wise, desireth for you.
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.
n105.
Wash ye every soiled thing with water that hath undergone no alteration in any one of the three respects
The "three respects" referred to in this verse are changes in the colour, taste or smell of the water. Bahá'u'lláh provides additional guidance concerning pure water and the point at which it is considered unsuitable for use (Q&A 91).
q91.
 
Question: Concerning pure water, and the point at which it is considered used.
Answer: Small quantities of water, such as one cupful, or even two or three, must be considered used after a single washing of the face and hands. But a kurr [this refers to a volume of approximately one half of a cubic metre] or more of water remaineth unchanged after one or two washings of the face, and there is no objection to its use unless it is altered in one of the three ways [colour, taste and smell], for example its colour is changed, in which case it should be looked upon as used.