Musannaf Ibn Abi Shayba 26:181

Abu Bakr ibn Ayyash narrated to us, from Isma'il ibn Sami', who said: A man said to Abu Wa'il: "Indeed, Abu Burdah claims that Abu Bakr made the grandfather a father." He said: "He lied. If he had made him a father, Umar would not have disagreed with him."