The Kitáb-i-Aqdas
Notes
16.Let him that findeth no water for ablution repeat five times the words “In the Name of God, the Most Pure, the Most Pure,” and then proceed to his devotions.   ¶10
Ablutions are to be performed by the believer in preparation for the offering of obligatory prayer. They consist of washing the hands and face. If water is unavailable, the repetition five times of the specifically revealed verse is prescribed. See note 34 for a general discussion of ablutions.
Antecedents in earlier Dispensations for the provision of substitute procedures to be followed when no water is available are found in the Qur’án1 and in the Arabic Bayán.
 
1 Qur’án, Surah 4:46