Commentary for Avodah Zarah 108:16

דבר אחר הרי שבא על אשת חבירו דין הוא שלא תתעבר אלא עולם כמנהגו נוהג והולך ושוטים שקלקלו עתידין ליתן את הדין

Another matter: Suppose a man has intercourse with his neighbor’s wife; it is right that she should not conceive, but the world pursues its natural course and as for the fools who act wrongly, they will be called into account.

Daf Shevui to Avodah Zarah