Abd Shuraib al-Adawi reported:My eare listened and my eye saw when Allah's Messenger (ﷺ) spoke and said: He who believes In Allah and the eireafter should show respect to the guest even with utmost kindness and courtesy. They said: Messenger of Allah, what is this utmost kindness and courtesy? He replied: It is for a day and a night. Hospitality extends for three days, and what is beyond that is a Sadaqa for him; and he who believes in Allah and the Hereafter should say something good or keep quiet

English translation · Sahih Muslim