حَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا أَبُو جَهْضَمٍ، مُوسَى بْنُ سَالِمٍ عَنْ عَبْدِ اللَّهِ بْنِ عُبَيْدِ اللَّهِ بْنِ عَبَّاسٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَبْدًا مَأْمُورًا مَا اخْتَصَّنَا دُونَ النَّاسِ بِشَيْءٍ إِلاَّ بِثَلاَثٍ أَمَرَنَا أَنْ نُسْبِغَ الْوُضُوءَ وَأَنْ لاَ نَأْكُلَ الصَّدَقَةَ وَأَنْ لاَ نُنْزِيَ حِمَارًا عَلَى فَرَسٍ ‏.‏ قَالَ أَبُو عِيسَى وَفِي الْبَابِ عَنْ عَلِيٍّ ‏.‏ وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏ وَرَوَى سُفْيَانُ الثَّوْرِيُّ هَذَا عَنْ أَبِي جَهْضَمٍ فَقَالَ عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عَبَّاسٍ عَنِ ابْنِ عَبَّاسٍ ‏.‏ قَالَ وَسَمِعْتُ مُحَمَّدًا يَقُولُ حَدِيثُ الثَّوْرِيِّ غَيْرُ مَحْفُوظٍ وَوَهِمَ فِيهِ الثَّوْرِيُّ وَالصَّحِيحُ مَا رَوَى إِسْمَاعِيلُ ابْنُ عُلَيَّةَ وَعَبْدُ الْوَارِثِ بْنُ سَعِيدٍ عَنْ أَبِي جَهْضَمٍ عَنْ عَبْدِ اللَّهِ بْنِ عُبَيْدِ اللَّهِ بْنِ عَبَّاسٍ عَنِ ابْنِ عَبَّاسٍ ‏.‏

Narrated Ibn 'Abbas: "The Messenger of Allah (PBUH) was a slave (of Allah), who would order as he has ben ordered to. He did not give an order to us instead of the people regarding anything except for three: He ordered us that we make our Wudu' well (Isbagh), that we not eat from charity, and the we not mate a donkey with a horse." [Abu 'Eisa said:] There is something on this topic from 'Ali. This Hadith is Hasan Sahih. Sufyan Ath-Thawri reported this from Abu Jahdam, who said: "From 'Ubaidullah bin 'Abdullah bin 'Abbas, from Ibn 'Abbas." He said I heard Muhammad saying: "The narration of Ath-Thawri is not preserved. Ath-Thawri made a mistake in it. What is correct is what Ismail bin 'Ulaiyyah and 'Abul-Warith bin Sa'eed reported from Abu Jahdam, from 'Abdullah bin 'Ubaidullah bin 'Abbas from Ibn 'Abbas." Translation Not Available

Book Ref: Jamiya Tirmidhi Book 23 Hadith 1701
Web Ref:  Jamiya Tirmidhi Vol 3 Book 21 Hadith 1701