I know this, because it's translated in Bulgaria and it's one of the most watched series. It meens that and 의해 "The Forbidden Fruit" they mean the 사랑 between Behlul And Bihter, because your in 사랑 with your uncle's wife.
Turkish actress Beren Saat - 더 많이 "Ask-i Memnu" (Forbidden Love) Promos & Behind the Scenes Also including Kivanc Tatlitug, Selcuk Yontem, Hazal Kaya, Nebahat Cehre