Quran 23:6

إِلَّا عَلَىٰٓ أَزْوَٰجِهِمْ أَوْ مَا مَلَكَتْ أَيْمَٰنُهُمْ فَإِنَّهُمْ غَيْرُ مَلُومِينَ

Except from their wives or those their right hands possess, for indeed, they will not be blamed -

Translation · Saheeh International