Negation makes placement harder to analyze because the word denied and the element highlighted need not be identical. In «lā fīhā ghawl», the locative is prominent before the negated noun; in «lā rayba fīhi», the denial of doubt comes first.
QuestionWhat it establishes
What is denied?The core negative proposition
Which element is fronted?Potential focus or restriction
What is contrasted?The scope of relative qasr
Without answering these questions, “it comes first” is not a sufficiently developed rhetorical analysis.