Hadith - Al-Tirmidhi #3254, Narrated Anas ibn Malik: Allah's Messenger, peace and blessings be upon him, said, "When a woman observes the five times of prayer, fasts during Ramadan, preserves her chastity and obeys her husband, she may enter by any of the gates of Paradise she wishes."

'Abdullah b. Amr reported Allah's Messenger, may peace be upon him, as saying: The whole world is a provision, and the best object of benefit of the world is the pious woman. (Translation of Sahih Bukhari, Book 8, The Book of Marriage, Number 3465)

Sahih Bukhari, Volume 7, Book 62, Number 20: Narrated Abu Burda's father: Allah's Apostle said, any man who has a slave girl whom he educates properly, teaches good manners, manumits and marries her, will get a double reward And if any man of the people of the Scriptures believes in his own prophet and then believes in me too, he will (also) get a double reward And any slave who fulfills his duty to his master and to his Lord, will (also) get a double reward."

Sahih Bukhari, Volume 7, Book 62, Number 132: Narrated 'Abdullah bin Zam'a: The Prophet said, "None of you should flog his wife as he flogs a slave and then have sexual intercourse with her in the last part of the day."