American Football Rules IFAF Approved Ruling 9-1-2:III

III. A11 completes a forward pass to A88 who is tackled in the field of play. During the play defensive end B88 is flagged for a personal foul against A79. RULING: The 15-yard penalty is enforced at the spot where A88 is tackled (Rules 7-3-12 and 9-1 Penalty). [Cited by 10-2-2-e-1, 7-3-12]