Sahih Bukhari Volume 3, Book 51, Hadith 2576

حَدَّثَنَا آدَمُ، حَدَّثَنَا شُعْبَةُ، حَدَّثَنَا جَعْفَرُ بْنُ إِيَاسٍ، قَالَ سَمِعْتُ سَعِيدَ بْنَ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ أَهْدَتْ أُمُّ حُفَيْدٍ خَالَةُ ابْنِ عَبَّاسٍ إِلَى النَّبِيِّ صلى الله عليه وسلم أَقِطًا وَسَمْنًا وَأَضُبًّا، فَأَكَلَ النَّبِيُّ صلى الله عليه وسلم مِنَ الأَقِطِ وَالسَّمْنِ، وَتَرَكَ الضَّبَّ تَقَذُّرًا‏.‏ قَالَ ابْنُ عَبَّاسٍ فَأُكِلَ عَلَى مَائِدَةِ رَسُولِ اللَّهِ صلى الله عليه وسلم، وَلَوْ كَانَ حَرَامًا مَا أُكِلَ عَلَى مَائِدَةِ رَسُولِ اللَّهِ صلى الله عليه وسلم‏.‏

Narrated By Said bin Jubair : Ibn Abbas said: Um Hufaid, Ibn 'Abbas's aunt sent some dried yogurt (butter free), ghee (butter) and a mastigar to the Prophet as a gift. The Prophet ate the dried yogurt and butter but left the mastigar because he disliked it. Ibn 'Abbas said, "The mastigar was eaten at the table of Allah's Apostle and if it had been illegal to eat, it could not have been eaten at the table of Allah's Apostle."