It was narrated from Umm Sharik that the Prophet ﷺ told her to kill house lizards.  

أَنَّ النَّبِيَّ ﷺ أَمَرَهَا بِقَتْلِ الأَوْزَاغِ  

“Whoever kills a house lizard with one blow will have such and such a reward. Whoever kills it with two blows will have such and such a reward,” less than the first. “And whoever kills it with three blows will have such and such reward,” less than that mentioned the second time.  

عَنْ رَسُولِ اللَّهِ ﷺ 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  

“Vermin.”  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لِلْوَزَغِ الْفُوَيْسِقَةُ  

“O Mother of the Believers, what do you do with this?” She said: “We kill these house lizards with it, for the Prophet of Allah ﷺ told us that when Ibrahim was thrown into the fire, there was no beast on earth that did not try to put it out, apart from the house lizard that blew on it. So the Messenger of Allah ﷺ commanded that they should be killed.”  

أَنَّهَا دَخَلَتْ عَلَى عَائِشَةَ فَرَأَتْ فِي بَيْتِهَا رُمْحًا مَوْضُوعًا فَقَالَتْ يَا أُمَّ الْمُؤْمِنِينَ مَا تَصْنَعِينَ بِهَذَا قَالَتْ نَقْتُلُ بِهِ هَذِهِ الأَوْزَاغَ فَإِنَّ نَبِيَّ اللَّهِ ﷺ أَخْبَرَنَا أَنَّ إِبْرَاهِيمَ لَمَّا أُلْقِيَ فِي النَّارِ لَمْ تَكُنْ فِي الأَرْضِ دَابَّةٌ إِلاَّ أَطْفَأَتِ النَّارَ غَيْرَ الْوَزَغِ فَإِنَّهَا كَانَتْ تَنْفُخُ عَلَيْهِ فَأَمَرَ رَسُولُ اللَّهِ ﷺ بِقَتْلِهِ