لو ترتب سلسلة الممكنات لا إلى نهاية لاحتاجت إلى علة
If a chain of contingent things extended without end, the chain as a whole would still require a cause.
This is the premise concerning a cause of the collection. Combining dependent members into an ordered system is held not to establish that the system is independent. The argument thus asks what explains the complete series.
A logical distinction is vital: “each member has a cause” and “the total collection requires a cause beyond itself” are not verbally identical statements. The text supplies a further reason for the latter; it should not simply be assumed from the wording of the former.