Anas b. Malik reported that two persons sneezed in the presence of Allah's Messenger ( صلی اللہ علیہ وسلم ). He (the Messenger of Allah) invoked mercy for one, and did not invoke for the other. The one for whom he had not prayed said:
So and so sneezed and you said: May Allah have mercy upon you. I also sneezed but you did not utter these words for me. Thereupon he (the Holy Prophet) said: That person praised Allah, and you did not praise Allah.