My ears heard and my eyes saw when the Prophet ﷺ spoke and said, "Whoever believes in Allah and the Last Day, let him honor his neighbor. Whoever believes in Allah and the Last Day, let him honor his guest with his due."Someone asked, "What is his due, Messenger of Allah?"He replied, "A day and a night. Hospitality extends for three days, and whatever is beyond that is charity given to him. Whoever believes in Allah and the Last Day, let him speak good or remain silent."
سمعت أذناي، وأبصرت عيناي، حين تكلم النبي ﷺ فقال: من كان يؤمن بالله واليوم الآخر فليكرم جاره، ومن كان يؤمن بالله واليوم الآخر فليكرم ضيفه جائزته قال: وما جائزته يا رسول الله؟ قال: يوم وليلة، والضيافة ثلاثة أيام، فما كان وراء ذلك فهو صدقة عليه، ومن كان يؤمن بالله واليوم الآخر فليقل خيرا أو ليصمت.
Bukhari narrated it in al-Adab (6019), and Muslim in al-Luqata (14:48, following hadith 1726), both through Layth, from Saeed Maqburi, from Abu Shurayh Adawi, who narrated it.