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

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