What is the ruling on a child resulting from a couple who sometimes commit indecency through the anus and sometimes through the vagina, and pregnancy occurs?

The one who separates between the spouses in the mentioned situation is the ruler (judge), and that is if the matter is brought before him with the confession of both spouses or the testimony of upright witnesses. The separation does not occur merely by the commission of the evil act. If the matter is not brought before the ruler, the marriage remains valid, and this act has no effect on the lineage of the children.