Is it permissible to advise airplane passengers not to be wasteful when using water for ablution in airplane lavatories to avoid potential technical damage?
The questioner's assumption is not valid, because the knowledgeable person performing ablution directs the water falling from his ablution into the drainage basin, and a person should not be wasteful with water.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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