وإسنادًا مجازيًّا، وهو إسناده أي إسناد الفعل أو معناه إلى ملابس له غير ما هو له
Figurative predication is assigning a verb, or the meaning of a verb, to something associated with it other than its proper bearer.
al-fiʿl aw maʿnāhu (الفعل أو معناه) makes the definition broad enough to include action-meanings in participles and verbal nouns, rather than verbs alone.
A mulābis (ملابس) is something genuinely connected with the event—its patient, time, place, cause, and the like. The expression ghayr mā huwa lahu (غير ما هو له) means that this related element is not the event's primary bearer.