Musannaf Ibn Abi Shaybah 39850 — Reports on the caliphate of Umar bin

It is narrated from Sayyiduna al-Miswar bin Makhramah (may Allah be pleased with him), who said: Sayyiduna Ibn Abbas (may Allah be pleased with them both) and I entered upon Sayyiduna Umar (may Allah be pleased with him) after the attack on him, while he was unconscious. We said: "He cannot be roused by anything that alarms him more than prayer." So we said: "O Commander of the Faithful! Prayer!" Sayyiduna Umar woke and said: "Prayer! A man who abandons prayer has no share in Islam." Then Sayyiduna Umar prayed in this state, while blood was flowing from his wounds.