When does “fāza al-farīq. Tadraba ṭawīlan” function as explanatory resumption?

Supplementary Practice 4: Audience, Emphasis, Restriction and Rhetorical Judgment

• When the victory invites a question about its cause and the next clause answers it
• When the second is merely a word-for-word substitute
• When the clauses contain contradictory agents
• When wāw is omitted only for rhyme