Narrated `Abdullah bin 'Amir: `Umar went to Sham and when h ached Sargh, he got the news that an epidemic (of plague) had broken out in Sham. `Abdur-Rahman bin `Auf told him that Allah's Apostle said, If you hear that it (plague) has broken out in a land, do not go to it; but if it breaks out in a land where you are present, do not go out escaping from it.