Sahih Bukhari Volume 7, Book 70, Hadith 5391

حَدَّثَنَا أَبُو النُّعْمَانِ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ أَبِي بِشْرٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ أُمَّ حُفَيْدٍ بِنْتَ الْحَارِثِ بْنِ حَزْن ٍ ـ خَالَةَ ابْنِ عَبَّاسٍ ـ أَهْدَتْ إِلَى النَّبِيِّ صلى الله عليه وسلم سَمْنًا وَأَقِطًا وَأَضُبًّا، فَدَعَا بِهِنَّ فَأُكِلْنَ عَلَى مَائِدَتِهِ، وَتَرَكَهُنَّ النَّبِيُّ صلى الله عليه وسلم كَالْمُسْتَقْذِرِ لَهُنَّ، وَلَوْ كُنَّ حَرَامًا مَا أُكِلْنَ عَلَى مَائِدَةِ النَّبِيِّ صلى الله عليه وسلم وَلاَ أَمَرَ بِأَكْلِهِنَّ‏.

Narrated By Ibn 'Abbas : That his aunt, Um Hufaid bint Al-Harith bin Hazn, presented to the Prophet butter, dried yoghurt and mastigures. The Prophet invited the people to those mastigures and they were eaten on his dining sheet, but the Prophet did not eat of it, as if he disliked it. Nevertheless. if it was unlawful to eat that, the people would not have eaten it on the dining sheet of the Prophet nor would he have ordered that they be eaten.