Abu Hurairah narrated : "that a man from Fazarah came to the Prophet (ﷺ) and said: 'O Messenger of Allah (ﷺ)! My wife gave birth to black boy." So the Prophet (s.a.w) said: "" He said: 'Yes." He said: "Then what are their colors?" He said: "Red." He said: "Is there a gray one among them?" He said: "Yes, there is a grey one among them." He said: "From where does that come?" He said: "Perhaps it is hereditary." He said: "Then in the same way, perhaps it is his heredity." This Hadith is Hasan Sahih.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَبْدُ الْجَبَّارِ بْنُ الْعَلاَءِ بْنِ عَبْدِ الْجَبَّارِ الْعَطَّارُ، وَسَعِيدُ بْنُ عَبْدِ الرَّحْمَنِ الْمَخْزُومِيُّ، قَالاَ حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ جَاءَ رَجُلٌ مِنْ بَنِي فَزَارَةَ إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ يَا رَسُولَ اللَّهِ إِنَّ امْرَأَتِي وَلَدَتْ غُلاَمًا أَسْوَدَ . فَقَالَ النَّبِيُّ صلى الله عليه وسلم " هَلْ لَكَ مِنْ إِبِلٍ " . قَالَ نَعَمْ . قَالَ " فَمَا أَلْوَانُهَا " . قَالَ حُمْرٌ . قَالَ " فَهَلْ فِيهَا أَوْرَقُ " . قَالَ نَعَمْ إِنَّ فِيهَا لَوُرْقًا . قَالَ " أَنَّى أَتَاهَا ذَلِكَ " . قَالَ لَعَلَّ عِرْقًا نَزَعَهَا . قَالَ " فَهَذَا لَعَلَّ عِرْقًا نَزَعَهُ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
sunnah.com