Question on hitting player already OB

[BktBallRef]

Originally posted by Bob Floyd

NFL Rule reference: Rule 9,Art.5
"No player of the kicker's team, who has been out bounds, may touch or recover a scrimmage kick beyond the line until after it has been touched by B. Penalty: Loss of five yards from the previous spot.
Note there is no reference to "touching by another K player" which was added by ABoselli in his post on the same subject.

That wasn't what I was asking. ABoselli stated:

"Hitting a player who is OB is a foul regardless of how he got there, so it's OK to push him out (as long as it was not an illegal act that forced him out e.g. blow to the head or hands to the face, personal foul etc)but not OK to keep him out."

That's what I was asking for regarding a rule reference.