Abu Huraira (Allah be pleased with him) reported:

There came a person to the Prophet (ﷺ) ) from Banu Fazara and said: My wife has given birth to a child who is black, whereupon Allah's Messenger (ﷺ) said: Have you any camels? He said: Yes. He again said: What is this colour? He said: They are red. He said: Is there a dusky one among them? He said: Yes, there are dusky ones among them He said: How has it come about? He said: It is perhaps the strain to which it has reverted, whereupon he (the Prophet) said: It is perhaps the strain to which he (the child) has reverted.

وَحَدَّثَنَاهُ قُتَيْبَةُ بْنُ سَعِيدٍ، وَأَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ وَعَمْرٌو النَّاقِدُ وَزُهَيْرُ بْنُ حَرْبٍ - وَاللَّفْظُ لِقُتَيْبَةَ - قَالُوا حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، 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 ‏.‏ فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ هَلْ لَكَ مِنْ إِبِلٍ ‏"‏ ‏.‏ قَالَ نَعَمْ ‏.‏ قَالَ ‏"‏ فَمَا أَلْوَانُهَا ‏"‏ ‏.‏ قَالَ حُمْرٌ ‏.‏ قَالَ ‏"‏ هَلْ فِيهَا مِنْ أَوْرَقَ ‏"‏ ‏.‏ قَالَ إِنَّ فِيهَا لَوُرْقًا ‏.‏ قَالَ ‏"‏ فَأَنَّى أَتَاهَا ذَلِكَ ‏"‏ ‏.‏ قَالَ عَسَى أَنْ يَكُونَ نَزَعَهُ عِرْقٌ ‏.‏ قَالَ ‏"‏ وَهَذَا عَسَى أَنْ يَكُونَ نَزَعَهُ عِرْقٌ ‏"‏ ‏.‏