أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ، قَالَ حَدَّثَنَا خَالِدٌ، عَنِ ابْنِ أَبِي ذِئْبٍ، عَنْ نَافِعِ بْنِ أَبِي نَافِعٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ لاَ سَبَقَ إِلاَّ فِي نَصْلٍ أَوْ حَافِرٍ أَوْ خُفٍّ ‏"‏ ‏.‏

It was narrated that Anas said

"The Messenger of Allah had a she-camel called Al-'Adba' which could not be beaten. One day a Bedouin came on a riding-camel and beat her (in a race). The Muslims were upset by that, and when he saw the expressions on their faces they said: 'O Messenger of Allah, Al-'Adba' has been beaten.' He said: 'It is a right upon Allah that nothing is raised in this world except He lowers it.'"