Rule 8, Section 2, Article 5

If after a down in which a touchdown is scored, and prior to the initial ready-for-play signal for the try, either team commits any foul for which the basic spot is the succeeding spot, the offended team may accept the penalty and choose enforcement of the penalty:

a. On the try, or

b. On the subsequent kickoff.

Rule 3, Section 3, Article 4

A period shall not be extended by an untimed down if one of the following occurred during a down in which time expires:

a. When the defense fouls during a successful try/field goal and the offended team accepts the results of the play with enforcement of the penalty from the succeeding spot.

b. There was a foul by either team and the penalty is accepted for:

        1. unsportsmanlike fouls,
        2. nonplayer fouls,
        3. fouls that specify a loss of down,
        4. fouls that are enforced on the subsequent kickoff as in Rule 8-2-2, 8-2-3, 8-2-4, 8-2-5; or
        5. fouls for which enforcement, by rule, result in a safety.

NOTE: The score is cancelled in the event of an accepted penalty that specifics a loss of down.