Musannaf Ibn Abi Shaybah 34110 — Reports on Abu Bakr al-Siddiq

Rib'i bin Hirash (may Allah have mercy on him) said that Sayyiduna Hudhayfah (may Allah be pleased with him) said: We were sitting with the Prophet (peace and blessings be upon him) when he (peace and blessings be upon him) said: "Indeed, I do not know how long I will remain among you. After me, follow the example of these two," and he (peace and blessings be upon him) pointed to Sayyiduna Abu Bakr (may Allah be pleased with him) and Sayyiduna Umar (may Allah be pleased with him).