And Umm al-Mu'mineen Umm Habibah (may Allah be pleased with her) said that the Prophet (peace and blessings of Allah be upon him) said, "Do not present your daughters and sisters to me for marriage."

Narrated Jabir bin `Abdullah: While we were returning from a Ghazwa (Holy Battle) with the Prophet, I started driving my camel fast, as it was a lazy camel A rider came behind me and pricked my camel with a spear he had with him, and then my camel started running as fast as the best camel you may see. Behold! The rider was the Prophet himself. He said, 'What makes you in such a hurry?" I replied, I am newly married " He said, "Did you marry a virgin or a matron? I replied, "A matron." He said, "Why didn't you marry a young girl so that you may play with her and she with you?" When we were about to enter (Medina), the Prophet said, "Wait so that you may enter (Medina) at night so that the lady of unkempt hair may comb her hair and the one whose husband has been absent may shave her pubic region.

Narrated Jabir bin `Abdullah: When I got married, Allah's Apostle said to me, "What type of lady have you married?" I replied, "I have married a matron' He said, "Why, don't you have a liking for the virgins and for fondling them?" Jabir also said: Allah's Apostle said, "Why didn't you marry a young girl so that you might play with her and she with you?'

Narrated 'Urwa: 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."

And which woman is better, and it is better for a man to marry a good woman for his offspring, but it is not obligatory.

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."

And the reward of the person who freed his slave-girl and then married her.

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."

Narrated Abu Huraira: The Prophet said: Abraham did not tell lies except three. (One of them was) when Abraham passed by a tyrant and (his wife) Sara was accompanying him (Abu Huraira then mentioned the whole narration and said:) (The tyrant) gave her Hajar. Sara said, "Allah saved me from the hands of the Kafir (i.e. infidel) and gave me Hajar to serve me." (Abu Huraira added:) That (Hajar) is your mother, O Banu Ma'-As-Sama' (i.e., the Arabs).

Narrated Anas: The Prophet stayed for three days between Khaibar and Medina, and there he consummated his marriage to Safiyya bint Huyai. I invited the Muslims to the wedding banquet in which neither meat nor bread was offered. He ordered for leather dining-sheets to be spread, and dates, dried yoghurt and butter were laid on it, and that was the Prophet's wedding banquet. The Muslims wondered, "Is she (Saffiyya) considered as his wife or his slave girl?" Then they said, "If he orders her to veil herself, she will be one of the mothers of the Believers; but if he does not order her to veil herself, she will be a slave girl. So when the Prophet proceeded from there, he spared her a space behind him (on his shecamel) and put a screening veil between her and the people.