"The Messenger of Allah ruled that every clan should take part in paying the blood money, and it is not permissible for a freed slave to take a Muslim (other than the one who freed him) as his Mawla (Patron) without the permission (of his former master who set him free)" (Using translation from Nasāʾī 4829)
أَنَّهُ سَمِعَ جَابِرًا يَقُولُ «كَتَبَ رَسُولُ اللهِ ﷺ عَلَى كُلِّ بَطْنٍ عُقُولَهُ وَلَا يَحِلُّ لِمَوْلًى أَنْ يَتَوَلَّى مُسْلِمًا بِغَيْرِ إِذْنِهِ»