عَنْ أَبِي أَيُّوبَ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ إِذَا عَطَسَ أَحَدُكُمْ فَلْيَقُلْ الْحَمْدُ لِلَّهِ عَلَى كُلِّ حَالٍ وَلْيَقُلِ الَّذِي يَرُدُّ عَلَيْهِ رَحِمَكَ اللَّهُ وَلْيَقُلْ هُوَ يَهْدِيكَ اللَّهُ وَيُصْلِحُ بَالَكَ قَالَ حَجَّاجٌ رَضِيَ اللَّهُ عَنْهُ يَهْدِيكُمُ اللَّهُ وَيُصْلِحُ بَالَكُمْ
Sayyiduna Abu Ayyub Ansari (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: When any one of you sneezes and says "Alhamdulillah ‘ala kulli hal" (All praise is due to Allah in every circumstance), then the one who replies to him should say: "Yarhamukallah" (May Allah have mercy on you), and in response to this, the one who sneezed should then say: (May Allah guide you and rectify your condition).