Musannaf Ibn Abi Shayba 28:399

Yazid ibn Harun narrated to us, he said: Ismail ibn Abi Khalid informed us, from Qays ibn Abi Hazim, who said: Al-Zubayr entered upon Ammar—or Uthman—after the death of Abdullah. He said: "Give me the stipend of Abdullah, for the family of Abdullah are more entitled to it than the public treasury." He said: So he gave him fifteen thousand.