صحيح البخاري Sahih Bukhari كتاب البيوع The Book of Sales (Bargains)
بَابُ بَيْعِ الْغَرَرِ وَحَبَلِ الْحَبَلَةِ:

(61) Chapter. Al-Gharar (the sale of what is not present) and Habal-il-Habala (i.e., the sale of what is in the womb of an animal).

1 hadith
Hadith 2143
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ ، أَخْبَرَنَا مَالِكٌ ، عَنْ نَافِعٍ ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُ ، أَنّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ " نَهَى عَنْ بَيْعِ حَبَلِ الْحَبَلَةِ " ، وَكَانَ بَيْعًا يَتَبَايَعُهُ أَهْلُ الْجَاهِلِيَّةِ ، كَانَ الرَّجُلُ يَبْتَاعُ الْجَزُورَ إِلَى أَنْ تُنْتَجَ النَّاقَةُ ، ثُمَّ تُنْتَجُ الَّتِي فِي بَطْنِهَا .
Narrated `Abdullah bin `Umar: Allah's Apostle forbade the sale called 'Habal-al-Habala which was a kind of sale practiced in the Pre- Islamic Period of ignorance. One would pay the price of a she-camel which was not born yet would be born by the immediate offspring of an extant she-camel.
Hadith Reference Sahih Bukhari / The Book of Sales (Bargains) / Hadith: 2143
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة