The Book of Horses, Races and Shooting
28/13. Chapter:
Making Horses Lean For Racing
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، وَالْحَارِثُ بْنُ مِسْكِينٍ، قِرَاءَةً عَلَيْهِ وَأَنَا أَسْمَعُ، عَنِ ابْنِ الْقَاسِمِ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم سَابَقَ بَيْنَ الْخَيْلِ الَّتِي قَدْ أُضْمِرَتْ مِنَ الْحَفْيَاءِ وَكَانَ أَمَدُهَا ثَنِيَّةَ الْوَدَاعِ وَسَابَقَ بَيْنَ الْخَيْلِ الَّتِي لَمْ تُضْمَرْ مِنَ الثَّنِيَّةِ إِلَى مَسْجِدِ بَنِي زُرَيْقٍ وَأَنَّ عَبْدَ اللَّهِ كَانَ مِمَّنْ سَابَقَ بِهَا .
It was narrated from Ibn 'Umar that the Messenger of Allah organized a race for horses that had been made lean, from Al-Hafya' and its finish line was Thaniyyat Al-Wada', and he organized another race for horses that had not been made lean, from Ath-Thaniyyah to the Masjid of Banu Zuraiq, and 'Abdullah was among those who took part in the race.
Reference : Sunan an-Nasa'i 3584In-book reference : Book 28, Hadith 24English translation : Vol. 4, Book 28, Hadith 3614