Yahya related to me from Malik from Ibn Shihab from Amr ibn ash- Sharid that Abdullah ibn Abbas was asked whether, if a man had two wives, and one of them nursed a slave-boy, and the other had nursed a slave-girl, could the slave-boy marry the slave-girl. He said, "No. The husband is the same."

عَنْ رَجُلٍ كَانَتْ لَهُ امْرَأَتَانِ فَأَرْضَعَتْ إِحْدَاهُمَا غُلاَمًا وَأَرْضَعَتِ الأُخْرَى جَارِيَةً فَقِيلَ لَهُ هَلْ يَتَزَوَّجُ الْغُلاَمُ الْجَارِيَةَ فَقَالَ لاَ اللِّقَاحُ وَاحِدٌ