Sunan Ibn Majah, Volume 2, Book 5, Hadith 947 (DarusSalam) ⓘ

It was narrated that Ibn ‘Abbas said: “The Prophet was performing prayer at ‘Arafat, and Fadl and I came riding a female donkey. We passed in front of part of the row, then we dismounted and left the donkey, and we came and joined the row.”

حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا سُفْيَانُ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ النَّبِيُّ ـ صلى الله عليه وسلم ـ يُصَلِّي بِعَرَفَةَ فَجِئْتُ أَنَا وَالْفَضْلُ عَلَى أَتَانٍ فَمَرَرْنَا عَلَى بَعْضِ الصَّفِّ فَنَزَلْنَا عَنْهَا وَتَرَكْنَاهَا ثُمَّ دَخَلْنَا فِي الصَّفِّ ‏.‏