حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنْ بَيْعِ حَبَلِ الْحَبَلَةِ ‏.‏ وَكَانَ بَيْعًا يَتَبَايَعُهُ أَهْلُ الْجَاهِلِيَّةِ كَانَ الرَّجُلُ يَبْتَاعُ الْجَزُورَ إِلَى أَنْ تُنْتَجَ النَّاقَةُ ‏.‏ ثُمَّ تُنْتَجَ الَّتِي فِي بَطْنِهَا ‏.‏

Yahya related to me from Malih from Nafi from Abdullah ibn Umarthat the Messenger of Allah, may Allah bless him and grant him peace,forbade the transaction called habal alhabala. It was a transactionwhich the people of Jahiliya practised. A man would buy the unbornoffspring of the unborn offspring of a she-camel. Translation Not Available

Book Ref: Muwatta Imam Malik Book 31 Hadith 1354
Web Ref:  Muwatta Imam Malik Book 31 Hadith 62