Abu Hurayra reported that the Messenger of Allah, may Allah bless
him and grant him peace, said, "A Muslim owes another Muslim six duties."
He was asked, "And what are they, Messenger of Allah?" He said, "To greet
him when he meets him, to accept when he gives him an invitation, to give
him good counsel when he asks for advice, to wish mercy on him when he
sneezes and says, 'Praise be to Allah,' to visit him when he is ill, and
to join the funeral procession when he dies."
Al-Bara' ibn 'Azib said, "The Messenger of Allah, may Allah bless
him and grant him peace, instructed us to do seven things and forbade us
seven. He instructed us to visit the sick, to join funeral processions,
to bless people who sneeze, to fulfil our oaths, to help the wronged, to
return the greeting, and to accept invitations. He forbade us gold rings,
silver vessels, red (silk) saddle clothes, Qassi (silk and flax) garments,
thick brocade, embroidered silk, and pure silk."
'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."
Narrated Ibn Mas'ud reported that the Prophet, may Allah bless him and grant
him peace, said, "There are four things that one Muslim owes another Muslim:
to visit him when he is ill, to be with him when he dies, to accept when
he invites him, and to ask for mercy on him when he sneezes."
