Sahih al-Bukhari 55:17
Narrated Anas:
The Prophet (ﷺ) saw a man driving a Badana (i.e. camel for sacrifice) and said to him, "Ride on it." The man said, "O Allah's Messenger (ﷺ)! It is a Bandana." (The Prophet (ﷺ) repeated his order) and on the third or fourth time he said, "Ride it, (woe to you" or said: "May Allah be merciful to you).
Reference
Sahih al-Bukhari 55:17
In-book reference
Book 55, Hadith 17
Arabic Text
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ ـ رضى الله عنه ـ أَنَّ النَّبِيَّ صلى الله عليه وسلم رَأَى رَجُلاً يَسُوقُ بَدَنَةً، فَقَالَ لَهُ " ارْكَبْهَا ". فَقَالَ يَا رَسُولَ اللَّهِ إِنَّهَا بَدَنَةٌ. قَالَ فِي الثَّالِثَةِ أَوِ الرَّابِعَةِ " ارْكَبْهَا، وَيْلَكَ، أَوْ وَيْحَكَ ".