Sayyiduna Zayd bin Thabit (may Allah be pleased with him) says that the 'aqilah (paternal kin) do not pay, and the blood money is not spread over them, except for a third of the blood money or more.
So Ayyub narrated it; what is preserved (mahfuz) is that it is the saying of Sa'id bin al-Musayyib and Sulayman bin Yasar.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16384