 Al-Zubayri further relates that Uthman privately named Amr as the second-in-line to succeed him as caliph after the leading companion of Muhammad, al-Zubayr ibn al-Awwam.Amr was relegated to second-in-line because of his young age at the time.According to the modern historian Wilferd Madelung, this testament by Uthman most likely occurred during his illness in the year 644/45 and was discarded as soon as Uthman regained his health.