Should the one who sneezes and does not praise Allaah be reminded?
Question

                If someone sneezes and does not say al-hamdu Lillaah (praise be to Allaah) should I remind him?.
Praise be to Allah.
    Saying Yarhamuk Allaah (may Allaah have mercy on you) 
    is only prescribed for one who sneezes and praises Allaah. If someone 
    sneezes and does not praise Allaah, then it is not prescribed to say 
    Yarhamuk Allaah (may Allaah have mercy on you to him), or to remind him 
    to praise Allaah, because of the saheeh report from the Prophet  (peace 
    and blessings of Allaah be upon him) according to which two men sneezed in 
    his presence and he said Yarhamuk Allaah (may Allaah have mercy on 
    you) to one of them but not to the other. The man said: O Messenger of 
    Allaah, you said Yarhamuk Allaah (may Allaah have mercy on you) to 
    him but not to me. He said: “He praised Allaah and you did not.” If 
    reminding the one who sneezes was prescribed, then the Prophet  (peace 
    and blessings of Allaah be upon him) would have reminded this man to say 
    al-hamdu Lillah. 

    And Allaah is the Source of strength. May Allaah send 
    blessings and peace upon our Prophet Muhammad and his family and companions. 
    End quote. 

    Standing Committee for Academic Research and Issuing Fatwas