If someone gives a camel as a gift to a man riding it

Sahih al-Bukhari · Book 51 · Hadith 2611

وَقَالَ الْحُمَيْدِيُّ حَدَّثَنَا سُفْيَانُ، حَدَّثَنَا عَمْرٌو، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ كُنَّا مَعَ النَّبِيِّ صلى الله عليه وسلم فِي سَفَرٍ، وَكُنْتُ عَلَى بَكْرٍ صَعْبٍ فَقَالَ النَّبِيُّ صلى الله عليه وسلم لِعُمَرَ ‏"‏ بِعْنِيهِ ‏"‏‏.‏ فَابْتَاعَهُ فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ هُوَ لَكَ يَا عَبْدَ اللَّهِ ‏"‏‏.‏

Narrated Ibn 'Umar (ra): We were in the company of the Prophet (ﷺ) on a journey, and I was riding a troublesome camel. The Prophet (ﷺ) asked 'Umar to sell that camel to him. So, 'Umar sold it to him. The Prophet (ﷺ) then…