“Abu ‘Abd Allah (a.s.), has said that Ali ibn al-Husayn (a.s.), married a slave-girl who belonged to al-Hassan ibn Ali (a.s) and ‘Abd al-Malik ibn Marwan was informed about it. He wrote a letter to him (the Imam) that said, ‘I have heard that you have become the husband of a slave-girl!’ Ali ibn al-Husayn wrote back to him saying, ‘With Islam, Allah has removed the lowliness and has completed the shortcomings, exonerated of the blame and there is no blame on a Muslim. Blame certainly is the blame of ignorance. The Messenger of Allah (s.w) arranged marriage for his male slave and married with his slave-girl.’ When the letter reached ‘Abd al-Malik he asked those near him, ‘Tell me who is such a man that when something that makes people low and humiliating comes to him it increases for him nothing other than honor?’ They replied, ‘That is ’Amir al-Mu’minin (‘Abd al-Malik).’ He (‘Abd al-Malik) said, ‘No, by Allah that is not it.’ They then said, ‘We do not know anyone to be as such except ’Amir al-Mu’minin.’ He said, ‘No, by Allah, he is not ’Amir al-Mu’minin but he is Ali ibn al-Husayn (a.s.)’”