حَدَّثَنَا أَسْوَدُ بْنُ عَامِرٍ أَنْبَأَنَا إِسْرَائِيلُ عَنْ مُحَمَّدِ بْنِ عُبَيْدِ اللَّهِ عَنْ أَبِيهِ عَنْ عَمِّهِ قَالَ قَالَ عَلِيٌّ رَضِيَ اللَّهُ عَنْهُ وَسُئِلَ يَرْكَبُ الرَّجُلُ هَدْيَهُ فَقَالَ لَا بَأْسَ بِهِ قَدْ كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَمُرُّ بِالرِّجَالِ يَمْشُونَ فَيَأْمُرُهُمْ يَرْكَبُونَ هَدْيَهُ وَهَدْيَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ وَلَا تَتَّبِعُونَ شَيْئًا أَفْضَلَ مِنْ سُنَّةِ نَبِيِّكُمْ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ
مسند امام احمد بن حنبل · Hadith 979
It was narrated from Muhammad bin 'Ubaidullah, from his father, that his paternal unde said: 'Ali (RA) was asked: Can a man ride his sacrificial animal? He said: There is nothing wrong with it; the Prophet (PBUH) used to pass by men who were walking, and he would tell them to ride his sacrificial animals, i.e. the Prophet's sacrificial animals. He said: And there is nothing you could follow that is better than the Sutmah of your Prophet (PBUH).
Sanad
حَدَّثَنَا أَسْوَدُ بْنُ عَامِرٍ أَنْبَأَنَا إِسْرَائِيلُ عَنْ مُحَمَّدِ بْنِ عُبَيْدِ اللَّهِ عَنْ أَبِيهِ عَنْ عَمِّهِ قَالَ قَالَ عَلِيٌّ رَضِيَ اللَّهُ عَنْهُ وَسُئِلَ يَرْكَبُ الرَّجُلُ هَدْيَهُ