عَنِ ابْنِ مَسْعُودٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((مَنْ قَتَلَ حَيَّةً فَلَهُ سَبْعُ حَسَنَاتٍ، وَمَنْ قَتَلَ وَزَغًا فَلَهُ حَسَنَةٌ، وَمَنْ تَرَكَ حَيَّةً مَخَافَةَ عَاقِبَتِهَا فَلَيْسَ مِنَّا))
Narrated by Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Whoever kills a snake will receive seven good deeds, and whoever kills a lizard will receive one good deed, and whoever leaves a snake out of fear of its revenge is not from among us.