´It was narrated from Ibn 'Abbas that the Propher said:` "Paying in advance for the offspring of the offspring of a pregnant animal (Habal al-Habalah) is Riba''
Hadith Referenceسنن نسائي / كتاب البيوع / 4626
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح