Seeing-friend taking his ablution over one’s head in-dream means suffering harm or-scandal that will be caused by such-friend. Taking ablution in-dream also means dispelling fears, recovering from an illness, paying one’s debts or repenting from sin. Taking ablution with hot water in-dream means falling sick. Wanting to take ablution and failing to find the proper means to perform it in-dream means failure of-project or facing adversities. Also see Tayammum-Enacting-Prayers-Ritual bath-
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