المفسر: ما ظهر المراد به من اللفظ ببيان من قبل المتكلم بحيث لا يبقى معه احتمال التأويل والتخصيص.
Mufassar is wording whose meaning is made manifest by clarification from the speaker, leaving no room for interpretive redirection or specification.
The defining expression is bi-bayan min qibal al-mutakallim: the clarification proceeds from the speaker, not merely from a reader's preferred interpretation. The wording settles doubts that could previously have arisen. Personal confidence alone does not convert a text into this technical category.