(47, 48) باب مَنِ اقْتَصَّ وَأَخَذَ حَقَّهُ دُونَ السُّلْطَانِ
It was narrated from Abu Hurairah that the Prophet said:
"If a person were to look at you without permission and you were to throw a stone at him and put out his eye, there would be no blame on you."
Reference: Sunan an-Nasa'i 4861
In-book reference: Book 45, Hadith 156
English translation: Vol. 5, Book 45, Hadith 4865