Musannaf Ibn Abi Shaybah 36115 — Umar (may Allah be pleased with him)

Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) said: When Sayyiduna Umar (may Allah be pleased with him) came to Syria, I saw him resting in his tent during the day, and I waited for him in the shade of the tent. When he woke up, I heard his voice; he was saying: "O Allah, forgive me my return from the expedition of Sargh." That is, when he came back from there because of the plague.