Sunan an-Nasa'i, Volume 5, Book 44, Hadith 4628 (DarusSalam) ⓘ
It was narrated from Ibn 'Umar that: the Prophet forbade selling the offspring of the offspring of a pregnant animal (Habal Al-Habalah)
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم نَهَى عَنْ بَيْعِ حَبَلِ الْحَبَلَةِ .
also referenced under: Hadith 4624 (Reference) & Book 44, Hadith 176 (In-Book)