اِلَّا عَلٰٓى اَزۡوَاجِهِمۡ اَوۡ مَا مَلَـكَتۡ اَيۡمَانُهُمۡ فَاِنَّهُمۡ غَيۡرُ مَلُوۡمِيۡنَۚ
Except from their wives or those slave-girls who are the possessions of their hands. (If they go to them according to the Islamic injunctions), there is surely no blame on them.