See the 2002 NEC Index, and although it is not complete, these are the rules that apply to the question: The AHJ who does not enforce these rules will lose the battle in a courtroom.

Quote
Fire spread
Prevention of, wiring methods,
300.21, 725.3(B),
760.3(A), 770.3(A),
800.52(B), 820.52(B),
830.58(B)
Fire-stopped partitions, 300.21.
see also Firewalls

Joe Tedesco, NEC Consultant