RSA 540:17: Plea of Title, Recognizance.

If the defendant shall plead a plea which may bring in question the title to the demanded premises he shall forthwith recognize to the plaintiff, with sufficient sureties, in such sum as the court shall order, to enter his action in the superior court for the county at the next return day, and to prosecute his action in said court, and to pay all rent then due or which shall become due pending the action, and the damages and costs which may be awarded against him.