Abu Hurayra reported that the Prophet, may Allah bless him and grant him peace, said, "If a man looks into your house and you take some pebbles and gouge out his eye, there is no fault in you."  

عَنِ النَّبِيِّ ﷺ قَالَ لَوْ اطَّلَعَ رَجُلٌ فِي بَيْتِكَ فَخَذَفْتَهُ بِحَصَاةٍ فَفَقَأْتَ عَيْنَهُ مَا كَانَ عَلَيْكَ جُنَاحٌ  

Anas said, "The Prophet, may Allah bless him and grant him peace, was standing in prayer and a man looked into his room. He took an arrow from his quiver and aimed it at his eyes."  

عَنْ أَنَسٍ قَالَ كَانَ النَّبِيُّ ﷺ قَائِمًا يُصَلِّي فَاطَّلَعَ رَجُلٌ فِي بَيْتِهِ فَأَخَذَ سَهْمًا مِنْ كِنَانَتِهِ فَسَدَّدَ نَحْوَ عَيْنَيْهِ