142. hadíth
"وَ قَضَى أَمِيرُ اَلْمُؤْمِنِينَ عَلَيْهِ اَلسَّلاَمُ "أَنْ تُنْكَحَ اَلْحُرَّةُ عَلَى اَلْأَمَةِ وَ لاَ تُنْكَحَ اَلْأَمَةُ عَلَى اَلْحُرَّةِ" وَ مَنْ تَزَوَّجَ حُرَّةً عَلَى أَمَةٍ قَسَمَ لِلْحُرَّةِ ضِعْفَيْ مَا يَقْسِمُ لِلْأَمَةِ مِنْ مَالِهِ وَ نَفْسِهِ وَ لِلْأَمَةِ اَلثُّلُثَ مِنْ مَالِهِ وَ نَفْسِهِ".
Commander of the Faithful (a.s) ruled: "A free woman may be married before a bondwoman, but a bondwoman may not be married before a free woman." If a man marries a free woman along with a bondwoman, he must allocate to the free woman twice as much from his wealth and time as he allocates to the bondwoman, and the bondwoman is entitled to one-third of his wealth and time."