"Whoever believes in Allah and the Last Day let him honor his guest with his due reward." They said: "O Messenger of Allah, what is his due reward?" He said: "A day and a night (of excellent accommodation), and hospitality is for three days, and whatever is beyond that is charity offered to him." [Al-Bukhari]

«مَنْ كَان يُؤمِن بِاللهِ وَاليَومِ الآخِرِ فَلْيُكْرِم ضَيفَه جَائِزَتَه»، قَالوا: وما جَائِزَتُهُ؟ يَا رسول الله، قال: «يَومُهُ ولَيلَتُهُ، والضِّيَافَةُ ثَلاَثَةُ أَيَّامٍ، فَمَا كَانَ وَرَاءَ ذَلك فَهُوَ صَدَقَةٌ عَلَيه» (البخاري)