Does water that changed appearance on its own (not due to an external substance) disqualify it for hand-washing?
Synopsis
The Mechaber rules that water changed in appearance from any cause — including from itself — is invalid. Multiple later authorities dispute whether self-generated color change actually disqualifies water, citing the Rambam and Tosefta.
More in Who Must Wash Hands for Bread
Does using water for labor (melacha) — such as soaking bread, cooling wine, or washing dirty vessels — disqualify it for hand-washing?
3 opinions
Is water in front of a blacksmith or barber disqualified for hand-washing?
1 opinions
Is water from which animals or birds drank disqualified for hand-washing?
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Does melacha (labor) disqualify mikveh water or spring water that is still connected?
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May one use fire-heated water (chamei ha-ur) for hand-washing, even when it is scalding hot (yad soledet)?
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May one immerse hands in the hot springs of Tiberias (chamei Teveriah), and what are the conditions?
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What is the reason geothermal spring water (like Tiberias) is invalid for vessel-based hand-washing, and does the dog-drinkability test apply to other bitter/hot springs?
3 opinions
Is salty, foul-smelling, or bitter water — unfit for dog-drinking — valid for hand-washing or for mikveh immersion?
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