It was narrated from Abu Hurairah that a man from Banu Fazarah came to the Messenger of Allah and said:

"My wife has given birth to a black boy." The Messenger of Allah 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 ones among them." He said: "Where do you think they come from?" He said: "Perhaps it is hereditary." He said: "Likewise, perhaps this is hereditary."

أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَجُلاً، مِنْ بَنِي فَزَارَةَ أَتَى رَسُولَ اللَّهِ ﷺ فَقَالَ إِنَّ امْرَأَتِي وَلَدَتْ غُلاَمًا أَسْوَدَ . فَقَالَ رَسُولُ اللَّهِ ﷺ " هَلْ لَكَ مِنْ إِبِلٍ " . قَالَ نَعَمْ . قَالَ " فَمَا أَلْوَانُهَا " . قَالَ حُمْرٌ . قَالَ " فَهَلْ فِيهَا مِنْ أَوْرَقَ " . قَالَ إِنَّ فِيهَا لَوُرْقًا . قَالَ " فَأَنَّى تَرَى أَتَى ذَلِكَ " . قَالَ عَسَى أَنْ يَكُونَ نَزَعَهُ عِرْقٌ . فَقَالَ رَسُولُ اللَّهِ ﷺ " وَهَذَا عَسَى أَنْ يَكُونَ نَزَعَهُ عِرْقٌ " .