Musannaf Ibn Abi Shaybah 29386 — Blood money: who is liable for it?

Abd al-Aziz bin Umar said that Umar bin Abd al-Aziz wrote to him concerning a man whose masters had said: We will not pay blood money on his behalf. So he wrote to the judge that he should make the blood money binding on them, for: I am certain that they are the ones who take his inheritance.