It has been narrated on the authority of Ibn 'Umar that the Messenger of Allah ﷺ had a race of the horses which had been especially prepared for the purpose from Hafya' to Thaniyyat al-Wada' (the latter being the winning post), and of those which had not been trained from Thaniyya to the mosque of Banu Zuraiq, and Ibn Umar was among those who took part in this race.  

أَنَّ رَسُولَ اللَّهِ ﷺ سَابَقَ بِالْخَيْلِ الَّتِي قَدْ أُضْمِرَتْ مِنَ الْحَفْيَاءِ وَكَانَ أَمَدُهَا ثَنِيَّةَ الْوَدَاعِ وَسَابَقَ بَيْنَ الْخَيْلِ الَّتِي لَمْ تُضْمَرْ مِنَ الثَّنِيَّةِ إِلَى مَسْجِدِ بَنِي زُرَيْقٍ وَكَانَ ابْنُ عُمَرَ فِيمَنْ سَابَقَ بِهَا  

" I came first in the race and my horse jumped into the mosque with me."  

عَنْ نَافِعٍ وَزَادَ فِي حَدِيثِ أَيُّوبَ مِنْ رِوَايَةِ حَمَّادٍ وَابْنِ عُلَيَّةَ قَالَ عَبْدُ اللَّهِ فَجِئْتُ سَابِقًا فَطَفَّفَ بِي الْفَرَسُ الْمَسْجِدَ