Fouls During Or After A Touchdown, Field Goal or Try:
c. When a foul(s) occurs after a touchdown and before the ball is ready for play on the try or there was a live-ball foul treated as a dead-ball foul on the touchdown play, enforcement is on the try, the succeeding kickoff or from the succeeding spot in extra periods at the option of the offended team.
Approved Ruling 3-2-3 V. Team A scores a touchdown during a down in which time expires. After the touchdown, but before the try, either team fouls. RULING: The period is extended only for the try. The penalty may be enforced on the try or the succeeding kickoff, or the succeeding spot in extra periods.