Sunan an-Nasa'i 3479
It was narrated that Abu Hurairah said:
"A man from Banu Fazarah came to the Prophet and said: 'My wife has given birth to a black boy' -and he wanted to disown him. He said: 'Do you have camels?' He said: 'Yes.' He said: 'What color are they?' He said: 'Red.' He said: 'Are there any gray ones among them?' He said: 'There are some gray camels among them.' He said: 'Why is that do you think?' He said: 'Perhaps it is hereditary.' He said: 'Perhaps this is hereditary.' And he did not permit him to disown him."
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ بَزِيعٍ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، قَالَ حَدَّثَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ جَاءَ رَجُلٌ مِنْ بَنِي فَزَارَةَ إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ إِنَّ امْرَأَتِي وَلَدَتْ غُلاَمًا أَسْوَدَ ‏.‏ وَهُوَ يُرِيدُ الاِنْتِفَاءَ مِنْهُ ‏.‏ فَقَالَ ‏"‏ هَلْ لَكَ مِنْ إِبِلٍ ‏"‏ ‏.‏ قَالَ نَعَمْ ‏.‏ قَالَ ‏"‏ مَا أَلْوَانُهَا ‏"‏ ‏.‏ قَالَ حُمْرٌ ‏.‏ قَالَ ‏"‏ هَلْ فِيهَا مِنْ أَوْرَقَ ‏"‏ ‏.‏ قَالَ فِيهَا ذَوْدٌ وُرْقٌ ‏.‏ قَالَ ‏"‏ فَمَا ذَاكَ تُرَى ‏"‏ ‏.‏ قَالَ لَعَلَّهُ أَنْ يَكُونَ نَزَعَهَا عِرْقٌ ‏.‏ قَالَ ‏"‏ فَلَعَلَّ هَذَا أَنْ يَكُونَ نَزَعَهُ عِرْقٌ ‏"‏ ‏.‏ قَالَ فَلَمْ يُرَخِّصْ لَهُ فِي الاِنْتِفَاءِ مِنْهُ ‏.‏