Hadiths 7.18 to 7.20

7.18:
Narrated 'Ursa:
The Prophet asked Abu Bakr for `Aisha's hand in marriage. Abu
Bakr said "But I am your brother." The Prophet said, "You are
my brother in Allah's religion and His Book, but she (Aisha)
is lawful for me to marry."

7.19:
Narrated Abu Huraira: The Prophet said, "The best women are
the riders of the camels and the righteous among the women of
Quraish. They are the kindest women to their children in their
childhood and the more careful women of the property of their
husbands."

7.20:
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."