قَالَ أَبُو سَلَمَةَ بْنُ عَبْدِ الرَّحْمَنِ : سَمِعْتُ أَبَا هُرَيْرَةَ ، عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ : " لَا تُورِدُوا الْمُمْرِضَ عَلَى الْمُصِحِّ " .
Abu Huraira also said: The Prophet said, "The cattle suffering from a disease should not be mixed up with healthy cattle (or said "Do not put a patient with a healthy person as a precaution.")