The Prophet ﷺ sold a Mudabbar (on behalf of his master who was still living and in need of money). (Using translation from Bukhārī 2230)   

لَا يُبَاعُ الْمُدَبَّرُ  

[Machine] From Ibn Umar's saying, it is reported as being stopped (mawqufan), although it has also been narrated as elevated (marfu'an) with a weak chain of narration.  

عَنِ ابْنِ عُمَرَ مِنْ قَوْلِهِ مَوْقُوفًا وَقَدْ رُوِيَ مَرْفُوعًا بِإِسْنَادٍ ضَعِيفٍ  

[Machine] "That the Prophet, may ﷺ , said: The one who is skilled in organizing (resources) cannot be bought or given as a gift, and he is exempt from paying a third. Ali said: It has not been attributed to anyone except Ubaydah ibn Hassaan, who is weak, and it is only narrated from Ibn Umar, that his statement is suspended (not confirmed), and it does not remain as an elevated (prophetic) saying."  

أَنَّ النَّبِيَّ ﷺ قَالَ الْمُدَبَّرُ لَا يُبَاعُ وَلَا يُوهَبُ وَهُوَ حُرٌّ مِنَ الثُّلُثِ قَالَ عَلِيٌّ لَمْ يُسْنِدْهُ غَيْرُ عُبَيْدَةَ بْنِ حَسَّانَ وَهُوَ ضَعِيفٌ وَإِنَّمَا هُوَ عَنِ ابْنِ عُمَرَ مَوْقُوفًا مِنْ قَوْلِهِ وَلَا يَثْبُتُ مَرْفُوعًا