It was narrated that Abu Hurairah said:

"While we were with the Prophet, a man stood up and said: 'O Messenger of Allah, a black boy has been born to me.' The Messenger of Allah said: 'How did that happen?' He said: 'I do not know.' He said: 'Do you have camels?' He said: 'Yes.' He said: 'What color are they?' He said: 'Red.' He said: 'Are there any gray camels among them?' He said: 'There are some gray camels among them.' He said: 'Where do they come from?' He said: 'I do not know, O Allah's Messenger! Perhaps it is hereditary.' He said: 'Perhaps this is also hereditary.' Because of this, the Messenger of Allah decreed the following: 'It is not allowed for a man, to disown a child who was born on his bed, unless he claimed that he had seen an immoral act (Fahishah).'"

أَخْبَرَنَا أَحْمَدُ بْنُ مُحَمَّدِ بْنِ الْمُغِيرَةِ، قَالَ حَدَّثَنَا أَبُو حَيْوَةَ، - حِمْصِيٌّ - قَالَ حَدَّثَنَا شُعَيْبُ بْنُ أَبِي حَمْزَةَ، عَنِ الزُّهْرِيِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ بَيْنَمَا نَحْنُ عِنْدَ رَسُولِ اللَّهِ ﷺ قَامَ رَجُلٌ فَقَالَ يَا رَسُولَ اللَّهِ إِنِّي وُلِدَ لِي غُلاَمٌ أَسْوَدُ . فَقَالَ رَسُولُ اللَّهِ ﷺ " فَأَنَّى كَانَ ذَلِكَ " . قَالَ مَا أَدْرِي قَالَ " فَهَلْ لَكَ مِنْ إِبِلٍ " . قَالَ نَعَمْ . قَالَ " فَمَا أَلْوَانُهَا " . قَالَ حُمْرٌ . قَالَ " فَهَلْ فِيهَا جَمَلٌ أَوْرَقُ " . قَالَ فِيهَا إِبِلٌ وُرْقٌ . قَالَ " فَأَنَّى كَانَ ذَلِكَ " . قَالَ مَا أَدْرِي يَا رَسُولَ اللَّهِ إِلاَّ أَنْ يَكُونَ نَزَعَهُ عِرْقٌ . قَالَ " وَهَذَا لَعَلَّهُ نَزَعَهُ عِرْقٌ " . فَمِنْ أَجْلِهِ قَضَى رَسُولُ اللَّهِ ﷺ هَذَا لاَ يَجُوزُ لِرَجُلٍ أَنْ يَنْتَفِيَ مِنْ وَلَدٍ وُلِدَ عَلَى فِرَاشِهِ إِلاَّ أَنْ يَزْعُمَ أَنَّهُ رَأَى فَاحِشَةً .