Five kinds of animals are harmful and allowed to be killed in Haram
حَدَّثَنَا عَبْدَةُ بْنُ عَبْدِ اللَّهِ، أَخْبَرَنَا يَحْيَى بْنُ آدَمَ، عَنْ إِسْرَائِيلَ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، قَالَ كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي غَارٍ فَنَزَلَتْ {وَالْمُرْسَلاَتِ عُرْفًا} فَإِنَّا لَنَتَلَقَّاهَا مِنْ فِيهِ، إِذْ خَرَجَتْ حَيَّةٌ مِنْ جُحْرِهَا فَابْتَدَرْنَاهَا لِنَقْتُلَهَا، فَسَبَقَتْنَا فَدَخَلَتْ جُحْرَهَا، فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " وُقِيَتْ شَرَّكُمْ، كَمَا وُقِيتُمْ شَرَّهَا ". وَعَنْ إِسْرَائِيلَ عَنِ الأَعْمَشِ عَنْ إِبْرَاهِيمَ عَنْ عَلْقَمَةَ عَنْ عَبْدِ اللَّهِ مِثْلَهُ قَالَ وَإِنَّا لَنَتَلَقَّاهَا مِنْ فِيهِ رَطْبَةً. وَتَابَعَهُ أَبُو عَوَانَةَ عَنْ مُغِيرَةَ. وَقَالَ حَفْصٌ وَأَبُو مُعَاوِيَةَ وَسُلَيْمَانُ بْنُ قَرْمٍ عَنِ الأَعْمَشِ عَنْ إِبْرَاهِيمَ عَنِ الأَسْوَدِ عَنْ عَبْدِ اللَّهِ.
Narrated `Abdullah: Once we were in the company of Allah's Messenger (ﷺ) in a cave. Surat-al-Mursalat (77) was revealed there, and we were learning it from Allah's Messenger (ﷺ) . Suddenly a snake came out of its hole and we rushed towards it to kill it, but it hastened and entered its hole before we were able to catch it. Allah's Messenger (ﷺ) said," It has been saved from your evil and you have been saved from its evil."