Abu Hanifah and Abu Yusuf require washing when impurity beyond the exit exceeds the dirham threshold.
If the excess is below that threshold, the excused-quantity rule is relevant; in their calculation, impurity remaining at the normal exit is not automatically added to the excess to exceed the limit.
This follows a distinction between the special dry-cleansing concession and the tolerated quantity of bodily filth.
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Istinja: Methods, Preference and Juristic Differences
Abu Hanifah and Abu Yusuf require washing when impurity beyond the exit exceeds the dirham threshold.
If the excess is below that threshold, the excused-quantity rule is relevant; in their calculation, impurity remaining at the normal exit is not automatically added to the excess to exceed the limit.
This follows a distinction between the special dry-cleansing concession and the tolerated quantity of bodily filth.