ذِكْرُ الزَّجْرِ عَنْ بَيْعِ حَبَلِ الْحَبَلَةِ
It was narrated from Ibn ʿUmar that the Messenger of Allah ﷺ forbade selling the offspring of the offspring that is still in the womb of a camel. (Using translation from Aḥmad 394)
«أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْ بَيْعِ حَبَلِ الْحَبَلَةِ»