´It was narrated from Ibn 'Umar that:` the Messenger of Allah forbade selling the offspring of the offspring of a pregnant animal (Habal Al-Habalah), which was a transaction practiced by the people of the Jahiliyyah, whereby a man would buy camel to slaughter, but he would wait until the she-camel had produced offspring and the offspring in her belly had then produced offspring.
Hadith Referenceسنن نسائي / كتاب البيوع / 4629
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح