ENOfficial
It was narrated from Ibn 'Umar that: the Prophet (ﷺ) forbade selling the offspring of the offspring of a pregnant animal (Habal Al-Habalah)
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم نَهَى عَنْ بَيْعِ حَبَلِ الْحَبَلَةِ .
sunnah.com