Hadith 961:56
'Affan and Hasan narrated to us, they said: Hammad narrated to us, from 'Ata' ibn al-Sa'ib, from Abu Razin, from Mu'adh ibn Jabal, the like of it, except that he said: A donkey was brought to the Messenger of Allah, may Allah bless him and grant him peace, upon which a saddle-cloth had been fastened. However, Hasan combined the two chains of narration in his hadith.
حدثنا عفان، وحسن قالا: حدثنا حماد، عن عطاء بن السائب، عن أبي رزين، عن معاذ بن جبل مثله غير أنه قال: أتي رسول الله صلى الله عليه وسلم بحمار قد شد عليه برذعة إلا أن حسنا جمع الإسنادين في حديثه