«وأما بيان التبديل: وهو النسخ»
“Clarification by replacement is abrogation (naskh).”
Tabdil concerns a later authoritative legal indication replacing a previously operative ruling. It differs from confirmation of the apparent sense, explanation of ambiguity and a connected exception that modifies a speaker's original assertion.
Abrogation is not merely revealing a hidden meaning in the earlier wording. It introduces a later authoritative ruling that terminates continuation of the earlier rule. The distinction of abrogating evidence, abrogated rule and chronological order is therefore essential.
An earlier rule can have operated validly during its period and then ceased to apply under a later authorized ruling. There is no contradiction between the two time-specific judgments.