Good Manners and Form (Al-Adab)
Ṣaḥīḥ al-Bukhārī 6220
إِنَّهُ لاَ يَقْتُلُ الصَّيْدَ، وَلاَ يَنْكَأُ الْعَدُوَّ، وَإِنَّهُ يَفْقَأُ الْعَيْنَ، وَيَكْسِرُ السِّنَّ
innah lā yaqtulu aṣ-ṣayda, walā yankaʾu al-ʿaduwwa, wa-innah yafqaʾu al-ʿayna, wayaksiru as-sinna
Transliteration generated from the Arabic vowel marks
The full narration
Narrated `Abdullah bin Mughaffal Al-Muzani:The Prophet (ﷺ) forbade the throwing of stones (with the thumb and the index or middle finger), and said "It neither hunts a game nor kills (or hurts) an enemy, but it gouges out an eye or breaks a tooth
Source
Ṣaḥīḥ al-Bukhārī · 6220
Ṣaḥīḥ