حَدَّثَنَا هَدِيَّةُ بْنُ عَبْدِ الْوَهَّابِ، حَدَّثَنَا الْفَضْلُ بْنُ مُوسَى السِّيْنَانِيُّ، حَدَّثَنَا الْحُسَيْنُ بْنُ وَاقِدٍ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ذَاتَ يَوْمٍ ‏"‏ وَدِدْتُ لَوْ أَنَّ عِنْدَنَا خُبْزَةً بَيْضَاءَ مِنْ بُرَّةٍ سَمْرَاءَ مُلَبَّقَةٍ بِسَمْنٍ نَأْكُلُهَا ‏"‏ ‏.‏ قَالَ فَسَمِعَ بِذَلِكَ رَجُلٌ مِنَ الأَنْصَارِ فَاتَّخَذَهُ فَجَاءَ بِهِ إِلَيْهِ فَقَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ فِي أَىِّ شَىْءٍ كَانَ هَذَا السَّمْنُ ‏"‏ ‏.‏ قَالَ فِي عُكَّةِ ضَبٍّ ‏.‏ قَالَ فَأَبَى أَنْ يَأْكُلَهُ ‏.‏

It wasnarrated that Ibn ‘Umar said: “One day, the Messenger of Allah(PBUH) said: ‘I wish that we had some white bread made of brownwheat,softened with ghee, that we could eat.’ A man from among theAnsarheard that, so he took some (of that food) and brought it tohim. TheMessenger of Allah (PBUH) said: ‘Where was this ghee kept?’He said:‘In a container made of mastigure skin.’ And he refusedto eat it.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 29 Hadith 3341
Web Ref:  Sunan Ibn Majah Vol 4 Book 29 Hadith 3341