Sahih al-Bukhari 4931b
Narrated Abdullah:
While we were with Allah's Apostle in a cave, Surat "Wal Mursalat" was revealed to him and we received it directly from his mouth as soon as he had received the revelation. Suddenly a snake came out and Allah's Apostle ﷺ said, "Get at it and kill it!" We ran to kill it but it outstripped us. Allah's Apostle ﷺ said, "It has escaped your evil, as you too, have escaped its."
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، قَالَ قَالَ عَبْدُ اللَّهِ بَيْنَا نَحْنُ مَعَ رَسُولِ اللَّهِ ﷺ فِي غَارٍ إِذْ نَزَلَتْ عَلَيْهِ وَالْمُرْسَلاَتِ فَتَلَقَّيْنَاهَا مِنْ فِيهِ وَإِنَّ فَاهُ لَرَطْبٌ بِهَا إِذْ خَرَجَتْ حَيَّةٌ فَقَالَ رَسُولُ اللَّهِ ﷺ " عَلَيْكُمُ اقْتُلُوهَا ". قَالَ فَابْتَدَرْنَاهَا فَسَبَقَتْنَا ـ قَالَ ـ فَقَالَ " وُقِيَتْ شَرَّكُمْ، كَمَا وُقِيتُمْ شَرَّهَا ".