Hazrat Abu Hurairah (may Allah be pleased with him) narrated that I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: A Muslim has five rights over another Muslim: to return the greeting of salam, to visit the sick, to accompany the funeral, to accept an invitation, and to say "Yarhamuk Allah" (may Allah have mercy on you) in response to his saying "Alhamdulillah" after sneezing.