A duty can have an essential requirement and a distinct manner of better or more complete performance. Evidence for an additional practice need not nullify the original directive.
Washing the prescribed body parts and observing particular manners of ablution are not necessarily at the same legal rank. Omitting a Sunnah can reduce completeness without invalidating every obligatory act. The distinction prevents treating every added practice as an indispensable restriction on an unrestricted text.
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Absolute and Qualified Expressions: Unrestricted Wording and Added Conditions
A duty can have an essential requirement and a distinct manner of better or more complete performance. Evidence for an additional practice need not nullify the original directive.
Washing the prescribed body parts and observing particular manners of ablution are not necessarily at the same legal rank. Omitting a Sunnah can reduce completeness without invalidating every obligatory act. The distinction prevents treating every added practice as an indispensable restriction on an unrestricted text.