Abu Hurayra said, "I heard the Messenger of Allah, may Allah bless
him and grant him peace, say, 'The rights a Muslim has over another Muslim
are six." He was asked, "What are they?" He replied, "When he meets him,
he should greet him, When he gives him an invitation, he should accept.
When he asks him for advice, he should give him good counsel. When he sneezes
and praises Allah, he should wish him mercy. when he is ill, he should
visit him. When he dies, he should accompany him."