لأن ترك الأمر معصية كما أن ترك النهي معصية.
Because disregarding a binding command is disobedience, as is violating a prohibition.
The reasoning concerns commands whose legal implication is obligation. Characterizing non-compliance as disobedience indicates more than a mere recommendation. A binding command gives the addressee a duty rather than a purely optional opportunity.
But where credible evidence demonstrates that an imperative means recommendation, omitting the recommended act is not treated as sinful merely because the grammar is imperative. Similarly, permission cannot carry the force of obligation without further proof.
Thus, even when obligation is the default, the presence and strength of a contextual indication remain decisive in applying the rule to particular texts.