When a Muslims sneezes, he can say: Al-hamdu Lillah or Al-hamdu-Lillah ‘ala kulli haal or Al-hamdu-Lillah Rabb il-‘Alamin. The one who hears him can say: Yarhamuk Allah. If he says, ‘Yarhamuk-Allah,’ then let (the sneezer) say, ‘Yahdikum Allah wa yuslihu balakum.’”

-Muslims say "Alhamdulillah" after sneezing because it is a practice encouraged by Prophet Muhammad (peace be upon him). -Sneezing is seen as a blessing from Allah, as it provides relief and signifies good health, so Muslims are encouraged to thank Allah for this blessing. -Those who hear one say "Alhamdulillah" upon sneezing should respond with "Yarhamuk Allah" (may Allah have mercy on you). -This practice not only fosters kindness among Muslims, but also annoys Shaytan, as it involves the remembrance of Allah.