ENOfficial
‘Abd b. Mughaffal said : The Messenger of Allah (ﷺ) prohibited throwing pebbles (in sport) saying : game is not caught by such means. Neither is an enemy injured, but it may sometimes put out an eye or break a tooth.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ عُقْبَةَ بْنِ صُهْبَانَ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنِ الْخَذْفِ قَالَ " إِنَّهُ لاَ يَصِيدُ صَيْدًا وَلاَ يَنْكَأُ عَدُوًّا وَإِنَّمَا يَفْقَأُ الْعَيْنَ وَيَكْسِرُ السِّنَّ " .
sunnah.com