Holding play during a pass play for a first down
 

What is the rule when team A throws a pass for a first down and team B holds during that play. What is the basic spot or is the holding declined to take the first down.please use an NFHS rule reference thank you

It’s a loose ball play, so the basic spot is the previous spot. Team A can accept a 10-yd penalty and replay the down (if the penalty yardage doesn’t give them a new series), or decline the penalty and take the result of the play.

You didn't say when the infraction occurred relative to the pass. If it occurred during or prior to the loose ball on that down, it's a foul during a loose ball play, and by 10-4-2 the basic spot is the previous spot. While it would be rare for the defense to be holding after the catch is made, it is possible, and in that case it's a foul during a running play, and then by 10-4-4 the basic spot is where the run ended.

If the pass is thrown "for a first down", I'm taking that to mean it was completed and the ball became dead beyond the line to gain. The down and distance situation might be such that team A would decline the penalty if it was during a loose ball play, but even if they'd have to do so to get first down, the choice should still be presented; they may prefer a short yardage situation farther back to a first-and-ten or first-and-goal.

What page would this be in the case book for a reference To this question

10-3-1, 2, 3
10-4-1,2
9-2-3