It neither inflicts defeat to the enemy nor kills the game but breaks the tooth and puts the eye out. This hadith has been transmitted on the authority of Ibn Mahdi with a slight variation of wording.  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الْخَذْفِ قَالَ ابْنُ جَعْفَرٍ فِي حَدِيثِهِ وَقَالَ إِنَّهُ لاَ يَنْكَأُ الْعَدُوَّ وَلاَ يَقْتُلُ الصَّيْدَ وَلَكِنَّهُ يَكْسِرُ السِّنَّ وَيَفْقَأُ الْعَيْنَ وَقَالَ ابْنُ مَهْدِيٍّ إِنَّهَا لاَ تَنْكَأُ الْعَدُوَّ وَلَمْ يَذْكُرْ تَفْقَأُ الْعَيْنَ  

a near one of 'Abdullah b. Mughaffal threw pebbles. He prohibited him (to do so). He said that Messenger of Allah ( ﷺ) had prohibited the throwing of pebbles by saying: It does not catch the game, nor does it inflict defeat on the enemy, but breaks the tooth and puts the eye out. He (the near one of Abdullah b. Mughadal) again repeated it (the act of throwing of pebbles) whereupon he said: I narrate to you that Messenger of Allah (may peace be upon hish) disliked and prohibited throwing of pebbles, but I see you again throwing pebbles; I (would therefore) not speak with you.  

أَنَّ قَرِيبًا لِعَبْدِ اللَّهِ بْنِ مُغَفَّلٍ خَذَفَ قَالَ فَنَهَاهُ وَقَالَ إِنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الْخَذْفِ وَقَالَ إِنَّهَا لاَ تَصِيدُ صَيْدًا وَلاَ تَنْكَأُ عَدُوًّا وَلَكِنَّهَا تَكْسِرُ السِّنَّ وَتَفْقَأُ الْعَيْنَ قَالَ فَعَادَ فَقَالَ أُحَدِّثُكَ أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْهُ ثُمَّ تَخْذِفُ لاَ أُكَلِّمُكَ أَبَدًا  

Abdullah bin Mughaffal was sitting beside a nephew of his, the nephew hurled a pebble and he told him not to do that, and he said: "The Messenger of Allah ﷺ had forbidden that. He (the Prophet) said: 'It cannot be used for hunting and it cannot harm an enemy, but it may break a tooth or put an eye out." He said." His nephew hurled another pebble and he ("Abdullah bin Mughaffal) said: 'I tell you that the Messenger of Allah forbade that (and you go hurl another pebble)? I will never speak to you again.'"  

أَنَّهُ كَانَ جَالِسًا إِلَى جَنْبِهِ ابْنُ أَخٍ لَهُ فَخَذَفَ فَنَهَاهُ وَقَالَ إِنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْهَا وَقَالَ إِنَّهَا لاَ تَصِيدُ صَيْدًا وَلاَ تَنْكِي عَدُوًّا وَإِنَّهَا تَكْسِرُ السِّنَّ وَتَفْقَأُ الْعَيْنَ قَالَ فَعَادَ ابْنُ أَخِيهِ يَخْذِفُ فَقَالَ أُحَدِّثُكَ أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْهَا ثُمَّ عُدْتَ تَخْذِفُ لاَ أُكَلِّمُكَ أَبَدًا  

“The Prophet ﷺ forbade throwing small pebbles and said: ‘They do not kill any game or hurt the enemy, but they can break a tooth or put out an eye.’”  

نَهَى النَّبِيُّ ﷺ عَنِ الْخَذْفِ وَقَالَ إِنَّهَا لاَ تَقْتُلُ الصَّيْدَ وَلاَ تَنْكِي الْعَدُوَّ وَلَكِنَّهَا تَفْقَأُ الْعَيْنَ وَتَكْسِرُ السِّنَّ  

a near one of 'Abdullah b. Mughaffal threw pebbles. He prohibited him (to do so). He said that Messenger of Allah ( ﷺ) had prohibited the throwing of pebbles by saying: It does not catch the game, nor does it inflict defeat on the enemy, but breaks the tooth and puts the eye out. He (the near one of Abdullah b. Mughadal) again repeated it (the act of throwing of pebbles) whereupon he said: I narrate to you that Messenger of Allah (may peace be upon hish) disliked and prohibited throwing of pebbles, but I see you again throwing pebbles; I (would therefore) not speak with you. (Using translation from Muslim 1954d)  

أَنَّ قَرِيبًا لِعَبْدِ اللهِ بْنِ مُغَفَّلٍ خَذَفَ فَنَهَاهُ وَقَالَ إِنَّ رَسُولَ اللهِ ﷺ نَهَى عَنِ الْخَذْفِ وَقَالَ إِنَّهَا لَا تَصِيدُ صَيْدًا وَلَا تَنْكَأُ عَدُوًّا وَلَكِنَّهَا تَكْسِرُ السِّنَّ وَتَفْقَأُ الْعَيْنَ قَالَ فَعَادَ فَقَالَ حَدَّثْتُكَ أَنَّ رَسُولَ اللهِ ﷺ نَهَى عَنْهَا ثُمَّعُدْتَ لَا أُكَلِّمُكَ أَبَدًا  

[Machine] The Prophet ﷺ forbade the practice of 'khadhaf' and said that it doesn't catch prey or harm an enemy, but it instead causes blindness and breaks teeth. He also said that Yazeed once mentioned that it doesn't catch prey or harm an enemy either.  

عَنِ النَّبِيِّ ﷺ أَنَّهُ نَهَى عَنِ الْخَذْفِ وَقَالَ إِنَّهُ لَا يُصَادُ بِهِ صَيْدٌ وَلَا يُنْكَأُ بِهِ عَدُوٌّ وَلَكِنَّهَا تَفْقَأُ الْعَيْنَ وَتَكْسِرُ السِّنَّ وَقَالَ يَزِيدُ مَرَّةً لَا يُصَادُ بِهَا صَيْدٌ وَلَا يُنْكَأُ بِهَا عَدُوٌّ  

[Machine] The Messenger of Allah ﷺ forbade throwing stones and said, "It does not catch prey, nor does it injure an enemy. Rather, it breaks teeth and gouges eyes." So a man raised something between him and Sa'id, close to the ground, and asked, "Is this it? What is this?" Sa'id replied, "Shouldn't you see that I am telling you about the Messenger of Allah ﷺ , then you belittle it and I will never speak to you again."  

نَهَى رَسُولُ اللَّهِ ﷺ عَنِ الْخَذْفِ وَقَالَ «إِنَّهَا لَا تَصْطَادُ صَيْدًا وَلَا تَنْكَأُ عَدُوًّا وَلَكِنَّهَا تَكْسِرُ السِّنَّ وَتَفْقَأُ الْعَيْنَ» فَرَفَعَ رَجُلٌ بَيْنَهُ وَبَيْنَ سَعِيدٍ قَرَابَةٌ شَيْئًا مِنَ الْأَرْضِ فَقَالَ هَذِهِ؟ وَمَا تَكُونُ هَذِهِ؟ فَقَالَ سَعِيدٌ أَلَا أُرَانِي أُحَدِّثُكَ عَنْ رَسُولِ اللَّهِ ﷺ ثُمَّ تَهَاوَنُ بِهِ لَا أُكَلِّمُكَ أَبَدًا  

[Machine] "He saw a man throwing stones and said, 'Do not throw stones, for the Messenger of Allah ﷺ prohibited it or disliked it. He said, 'It does not kill a game animal nor inflict injury upon an enemy, but it can break teeth and damage an eye.' After that, he saw him throwing stones again and said, 'Shall I inform you about the Messenger of Allah ﷺ and you continue to throw? I will not speak to you like this and that.'"  

أَنَّهُ رَأَى رَجُلًا يَخْذِفُ قَالَ لَا تَخْذِفْ فَإِنَّ رَسُولَ اللَّهِ ﷺ «نَهَى عَنِ الْخَذْفِ أَوْ قَالَ كَرِهَ الْخَذْفَ وَقَالَ » إِنَّهُ لَا يُصَادُ بِهِ صَيْدٌ وَلَا يُنْكَأُ بِهِ عَدُوٌّ وَلَكِنَّهَا قَدْ تَكْسِرُ السِّنَّ وَتَفْقَأُ الْعَيْنَ « ثُمَّ رَآهُ يَخْذِفُ فَقَالَ أُحَدِّثُكَ عَنْ رَسُولِ اللَّهِ ﷺ ثُمَّ أَنْتَ تَخْذِفُ؟ لَا أُكَلِّمُكَ كَذَا وَكَذَا»