حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الْمَلِكِ بْنِ أَبِي الشَّوَارِبِ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ الْمُخْتَارِ، حَدَّثَنَا سُهَيْلٌ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، عَنْ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ ‏"‏ مَنْ قَتَلَ وَزَغًا فِي أَوَّلِ ضَرْبَةٍ فَلَهُ كَذَا وَكَذَا حَسَنَةً وَمَنْ قَتَلَهَا فِي الثَّانِيَةِ فَلَهُ كَذَا وَكَذَا - أَدْنَى مِنَ الأُولَى - وَمَنْ قَتَلَهَا فِي الضَّرْبَةِ الثَّالِثَةِ فَلَهُ كَذَا وَكَذَا حَسَنَةً - أَدْنَى مِنَ الَّذِي ذَكَرَهُ فِي الْمَرَّةِ الثَّانِيَةِ ‏"‏ ‏.‏

It wasnarrated from Abu Hurairah that the Messenger of Allah (PBUH)said: “Whoever kills a house lizard with one blow will have such andsucha reward. Whoever kills it with two blows will have such and suchareward,” less than the first. “And whoever kills it with threeblowswill have such and such reward,” less than that mentioned thesecondtime. Translation Not Available

Book Ref: Sunan Ibn Majah Book 28 Hadith 3229
Web Ref:  Sunan Ibn Majah Vol 4 Book 28 Hadith 3229