A report from Abu Yusuf classifies used water as impure with a lesser degree of impurity. Although still classified as najis under that opinion, its degree and consequential rulings differ from the cited report of Abu Hanifa.
The disagreement affects not only reuse for wudu but also potential consequences when the water reaches clothing.
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Used Water: Definition, Ruling and Juristic Differences
A report from Abu Yusuf classifies used water as impure with a lesser degree of impurity. Although still classified as najis under that opinion, its degree and consequential rulings differ from the cited report of Abu Hanifa.
The disagreement affects not only reuse for wudu but also potential consequences when the water reaches clothing.