It is narrated from Hazrat Abu Shurayh (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Hospitality is for three days, and the right (of elaborate hospitality) is only for one day and night. Whatever is beyond that is charity upon the host. And it is not permissible for a person to stay with someone so long that he makes him sinful." The companions asked: "O Messenger of Allah! What does making him sinful mean?" He replied: "That he stays with the host while the host has nothing left to offer him to eat."