Rule 9, Section 3, Article 4
e. When a legal forward pass crosses the neutral zone during a forward-pass play and a contact foul that is not pass interference is committed beyond the neutral zone, the enforcement spot is the previous spot. This includes Rule 9-3-4-c (A.R. 7-3-9-I and A.R. 9-3-4-I and II).
PENALTY—10 or 15 yards from the previous spot, plus first down if the foul occurred against an eligible receiver before the pass was touched [S38, S42, S43 or S45].