بُلُوغُ الْمَرَامِ
Bulugh al-Maram 795
Business Transactions
وَعَنْهُ; { أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -نَهَى عَنْ بَيْعِ حَبَلِ اَلْحَبَلَةِ, وَكَانَ بَيْعاً يَتَبَايَعُهُ أَهْلُ الْجَاهِلِيَّةِ: كَانَ اَلرَّجُلُ يَبْتَاعُ اَلْجَزُورَ إِلَى أَنْ تُنْتَجَ اَلنَّاقَةُ, ثُمَّ تُنْتَجُ اَلَّتِي فِي بَطْنِهَا } مُتَّفَقٌ عَلَيْهِ , وَاللَّفْظُ لِلْبُخَارِيِّ [1] .
Narrated [Ibn 'Umar (RA)]: Allah's Messenger (ﷺ) forbade the transaction called 'Habalal-Habalah" which was one entered into in the Jahiliya era, whereby a man bought a she-camel which was to be the offspring of a she-camel which was still in its mother's womb. [Agreed upon, and the wording is al-Bukhari's].
Sunnah.com reference: Book 7, Hadith 18