Ablution before prayer washes away the dust of the day. Dream tradition reads it as preparing the self to meet something sacred with a clear mind and clean hands.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.