It is narrated from Abdullah bin Amir bin Rabi'ah that Sayyiduna Umar bin Khattab (may Allah be pleased with him) set out towards Syria. When he reached Sargh, he received news that there was an epidemic in Syria. So Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him) said to him: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When you hear that there is an epidemic in a land, do not go there, and when an epidemic breaks out in the land where you are, do not flee from it." Upon hearing this, Sayyiduna Umar bin Khattab (may Allah be pleased with him) returned from Sargh.