This bowl of rose water is one of the offerings on a Buddhist Altar.

The Second Offering: Water to Wash The Feet - Purification

This is clear water mixed with incense, sandalwood, or another scent, which is made as an offering to all enlightened beings' feet. The symbolic meaning is purification. By cleansing the feet of the enlightened beings, we cleanse all our own negative karma and obscurations. By making offerings to clean the enlightened beings feet, we are really cleaning the "feet" of our own mind.

With respect, devotion and confidence, we offer an ocean of this kind of water to all enlightened beings to purify all the temporary obscurations of ourselves and all sentient beings. Obscurations are called "temporary" because they can be purified. If they were permanent, we could not purify them even if we make an effort. So meditate on this when you make these offerings.

All the different types of obscurations -- gross, subtle, negative karma, afflictive emotions, and obscurations to enlightenment -- all these different types of obscurations become fully purified.

(Text came from here)

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