Abu Hurayra reported that the Prophet, may Allah bless him and
grant him peace, said, "Allah loves the sneeze and dislikes yawning. When
one you sneezes and praises Allah, it is a duty for every Muslim who hears
him to say, 'May Allah have mercy on you.;' As for the yawn, it comes from
Shaytan. When one of you yawns, he should repress it as much as possible.
When one of you yawns, Shaytan laughs at him."
Abu Salih reported that the Prophet, may Allah bless him and grant
him peace, said, "When one of you sneezes, he should say, 'Praise be to
Allah.' When he says, 'Praise be to Allah, ' his brother or companion should
say to him, 'May Allah have mercy on you.' Then let the person who sneezed
say, 'May Allah guide you and put your affairs in order.'"
'Ali said, "When someone hears a sneeze and says, 'Praise be to
Allah, Lord of the Worlds, in every situation,' he will never get a toothache
or earache."
