عَنْ عَبْدِ اللَّهِ بْنِ جَعْفَرٍ رَضِيَ اللَّهُ عَنْهُ قَالَ أَحَدُهُمَا ذِي الْجَنَاحَيْنِ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ كَانَ إِذَا عَطَسَ حَمِدَ اللَّهَ فَيُقَالُ لَهُ يَرْحَمُكَ اللَّهُ فَيَقُولُ يَهْدِيكُمُ اللَّهُ وَيُصْلِحُ بَالَكُمْ
Dhul-Janahain Sayyiduna Abdullah bin Ja'far (may Allah be pleased with them both) narrates that when the Noble Prophet (peace and blessings be upon him) sneezed and said "Alhamdulillah," it would be said to him in reply: "Yarhamukallah." Then the Prophet (peace and blessings be upon him) would say: "Yahdikumullah wa yuslihu balakum" (May Allah guide you and set your condition right).