حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا سُفْيَانُ، عَنْ مَنْصُورٍ، عَنِ الشَّعْبِيِّ، عَنِ الْمِقْدَامِ أَبِي كَرِيمَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ لَيْلَةُ الضَّيْفِ وَاجِبَةٌ فَإِنْ أَصْبَحَ بِفِنَائِهِ فَهُوَ دَيْنٌ عَلَيْهِ فَإِنْ شَاءَ اقْتَضَى وَإِنْ شَاءَ تَرَكَ ‏"‏ ‏.‏

It was narrated that Miqdam Abu Karimah said: "The Messenger of Allah(PBUH) said: ' Putting up a guest for one night is obligatory. If you find a guest at your door in the morning, then this (hospitality) is (like) a debt that you (the host) owe him. If he (the guest) wants, he may request it, and if he wants, he may leave it'" Translation Not Available

Book Ref: Sunan Ibn Majah Book 33 Hadith 3677
Web Ref:  Sunan Ibn Majah Vol 5 Book 33 Hadith 3677