Ravana was known for his virility and his aggressive conquests of women. Ravana had several wives, foremost of whom was Mandodari - daughter of Mayasura and an apsara named Hema.Mandodari was renowned for her wisdom and grace as well as beauty and chastity. She is often compared to Sita, the most beautiful woman described in Indian spiritualism.In addition to his wives, Ravana maintained a harem of incredible size, populated with women whom he captured in his many conquests, many of them accepted and lived happily in his harem for his great manhood, power, and knowledge of different subjects. Ravana was known to force himself upon any woman who rejected his advances. Two significant encounters occurred that would shape the course of the Ramayana.The first was the encounter with the sage-woman Vedavati. Vedavati had been performing penance with the intention of winning Lord had been performing penance with the intention of winning Lord Vishnu as her husband. Ravana met her at her hermitage, her beauty enhanced by the austerities she had performed. He propositions her and is rejected. Ravana mocks her austerities and her devotion to Vishnu; finding himself firmly rejected at every turn, he tries to molest Vedavati, pulling her hair. This greatly incensed her, and she forthwith cut off her hair, and said she would enter into the fire before his eyes, adding, "Since I have been insulted in the forest by thee who art wicked-hearted, I shall be born again for thy destruction." So she entered the blazing fire, and celestial flowers fell all around. It was she who was born again as Sita, and was the moving cause of Ravana's death, though Rama was the agent.Vedavati is said to have been reborn as Sita, causing Ravana's death and winning Vishnu (as Rama) as her husband.The second was his encounter with the apsara Rambha, upon whom he forced himself. Rambha was betrothed to Kubera's son, but her plea that she was like a daughter to him did not deter Ravana. Angered at this, Kubera's son cursed Ravana, stating that his ten heads would fall off if he forced himself upon any woman thereafter. This curse is said to have protected Sita's chastity while she was Ravana's captive for nearly a year.