Hadith 8123

وَقَالَ : بَيْنَمَا رَجُلٌ يَسُوقُ بَدَنَةً مُقَلَّدَةً ، قَالَ لَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " وَيْلَكَ ارْكَبْهَا " ، قَالَ : بَدَنَةٌ يَا رَسُولَ اللَّهِ ! قَالَ : " وَيْلَكَ ارْكَبْهَا " .
And the Prophet Muhammad (peace and blessings be upon him) once saw a man driving a camel and the Prophet Muhammad (peace and blessings be upon him) said to him, "Ride on it." He replied, "It is a sacrificial animal." The Prophet Muhammad (peace and blessings be upon him) again said, "Ride on it, ride on it."
Hadith Reference مسند احمد / مسند المكثرين من الصحابة / 8123
Hadith Grading حکم دارالسلام: إسناده صحيح، م: 1322