The Messenger of Allah ﷺ prohibited killing the jinnan(small snakes) that are in the house, except the one which have two streaks and the one with small tail, for they obliterate the eyesight and cause miscarriage.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْ قَتْلِ الْجِنَّانِ الَّتِي تَكُونُ فِي الْبُيُوتِ إِلاَّ أَنْ يَكُونَ ذَا الطُّفْيَتَيْنِ وَالأَبْتَرَ فَإِنَّهُمَا يَخْطِفَانِ الْبَصَرَ وَيَطْرَحَانِ مَا فِي بُطُونِ النِّسَاءِ  

Malik related to me from Nafi from Sa'iba, the female mawla of A'isha, that the Messenger of Allah ﷺ forbade killing the snakes which were in the houses except those with two white stripes on their back and the short ones. They made one go blind and caused miscarriages in women.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنْ قَتْلِ الْجِنَّانِ الَّتِي فِي الْبُيُوتِ إِلاَّ ذَا الطُّفْيَتَيْنِ وَالأَبْتَرَ فَإِنَّهُمَا يَخْطِفَانِ الْبَصَرَ وَيَطْرَحَانِ مَا فِي بُطُونِ النِّسَاءِ