The petition for legal separation shall be denied on any of the following grounds:

(1) Where the aggrieved party has condoned the offense or act complained of;

(2) Where the aggrieved party has consented to the commission of the offense or act complained of;

(3) Where there is connivance between the parties in the commission of the offense or act constituting the ground for legal separation;

(4) Where both parties have given ground for legal separation;

(5) Where there is collusion between the parties to obtain decree of legal separation; or

(6) Where the action is barred by prescription. (Art. 56, Family Code)