RESPONSE TO THE SNEEZE OF A JEW H H 896 "The Jews would sneeze in the presence of the Prophet, praise and peace be upon him, hoping that he would respond with, 'May Allah have mercy on you' but his response was: 'May Allah guide you and improve your condition.'" R 896 Abu Daud and Tirmidhi with a chain up to Abu Musa who related this.
883- وعن أَبي موسى رضي الله عنه ، قَالَ : كَانَ اليَهُودُ يَتَعَاطَسُونَ عِنْدَ رسول اللهِ صلى الله عليه وآله وسلم ، يَرْجُونَ أنْ يَقُولَ لَهُمْ : يَرْحَمُكُم الله ، فَيَقُولُ : "يَهْدِيكُم اللهُ وَيُصْلِحُ بَالَكُمْ" رواه أَبُو داود والترمذي ، وقال : "حديث حسن صحيح" .