Musannaf Ibn Abi Shaybah 39844 — Reports on the caliphate of Umar bin

It is narrated from Isa bin Talhah and Urwah bin al-Zubayr that Sayyiduna Umar (may Allah be pleased with him) said: "Let Suhayb lead you in prayer for three days. And look (into the matter): if that (the choosing of a caliph) comes about, then well and good; otherwise, the affair of the Ummah of Muhammad (peace and blessings be upon him) shall not be left neglected for more than three days."