I married a woman, then a black woman came to us and said: I breast-fed you both. I went to the Prophet and said: I married so and so and a black woman came to me and said: I breast-fed you both. He turned away from me so I came to him from the other side and said: She is lying. He said: "How can you be intimate with your wife when she says that she breast-fed you both? Leave her (divorce her)." (Using translation from Nasāʾī 3330)   

إِنِّي قَدْ أَرْضَعْتُكُمَا فَأَتَيْتُ النَّبِيَّ ﷺ فَأَخْبَرْتُهُ فَقُلْتُ إِنِّي تَزَوَّجْتُ فُلَانَةَ بِنْتَ فُلَانٍ فَجَاءَتْنِي امْرَأَةٌ سَوْدَاءُ فَقَالَتْ إِنِّي قَدْ أَرْضَعْتُكُمَا فَأَعْرَضَ عَنِّي فَأَتَيْتُهُ مِنْ قِبَلِ وَجْهِهِ فَقُلْتُ إِنَّهَا كَاذِبَةٌ قَالَ «فَكَيْفَ بِهَا وَقَدْ زَعَمَتْ أَنَّهَا قَدْ أَرْضَعَتْكُمَا دَعْهَا عَنْكَ»