The witness of male and female slaves

Narrated Uqba bin Al-Harith:

That he had married Um Yahya bint Abu Ihab. He said. "A black slave-lady came and said, 'I suckled you both.' I then mentioned that to the Prophet who turned his face aside." Uqba further said, "I went to the other side and told the Prophet about it. He said, 'How can you (keep her as your wife) when the lady has said that she suckled both of you (i.e. you and your wife?)" So, the Prophet ordered him to divorce her.

حَدَّثَنَا أَبُو عَاصِمٍ، عَنِ ابْنِ جُرَيْجٍ، عَنِ ابْنِ أَبِي مُلَيْكَةَ، عَنْ عُقْبَةَ بْنِ الْحَارِثِ،. وَحَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنِ ابْنِ جُرَيْجٍ، قَالَ سَمِعْتُ ابْنَ أَبِي مُلَيْكَةَ، قَالَ حَدَّثَنِي عُقْبَةُ بْنُ الْحَارِثِ، أَوْ سَمِعْتُهُ مِنْهُ، أَنَّهُ تَزَوَّجَ أُمَّ يَحْيَى بِنْتَ أَبِي إِهَابٍ قَالَ فَجَاءَتْ أَمَةٌ سَوْدَاءُ فَقَالَتْ قَدْ أَرْضَعْتُكُمَا. فَذَكَرْتُ ذَلِكَ لِلنَّبِيِّ ﷺ فَأَعْرَضَ عَنِّي، قَالَ فَتَنَحَّيْتُ فَذَكَرْتُ ذَلِكَ لَهُ قَالَ " وَكَيْفَ وَقَدْ زَعَمَتْ أَنْ قَدْ أَرْضَعَتْكُمَا ". فَنَهَاهُ عَنْهَا.