وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ، عَنْ أَبِي شُرَيْحٍ الْكَعْبِيِّ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ مَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيَقُلْ خَيْرًا أَوْ لِيَصْمُتْ وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيُكْرِمْ جَارَهُ وَمَنْ كَانَ يُؤْمِنُ بِاللَّهِ وَالْيَوْمِ الآخِرِ فَلْيُكْرِمْ ضَيْفَهُ جَائِزَتُهُ يَوْمٌ وَلَيْلَةٌ وَضِيَافَتُهُ ثَلاَثَةُ أَيَّامٍ فَمَا كَانَ بَعْدَ ذَلِكَ فَهُوَ صَدَقَةٌ وَلاَ يَحِلُّ لَهُ أَنْ يَثْوِيَ عِنْدَهُ حَتَّى يُحْرِجَهُ ‏"‏ ‏.‏

Yahya related to me from Malik from Said ibn Abi Said al-Maqburifrom Abu Shurayh al-Kabi that the Messenger of Allah, may Allah blesshim and grant him peace, said, "Whoever believes in Allah and the LastDay should speak good or be silent. Whoever believes in Allah and theLast Day should be generous to his neighbour. Whoever believes inAllah and the Last Day, should be generous to his guest. His welcomeis for a day and a night, and his hospitality is for three days.Whatever is more than that is sadaqa. It is not halal for a guest tostay with a man until he becomes a burden." Translation Not Available

Book Ref: Muwatta Imam Malik Book 49 Hadith 1695
Web Ref:  Muwatta Imam Malik Book 49 Hadith 22