While we were with the Prophet ﷺ in a cave, Surat wal-Mursalat was revealed to him and he recited it, and I heard it directly from his mouth as soon as he recited its revelation. Suddenly a snake sprang at us, and the Prophet ﷺ said, "Kill it!" We ran to kill it but it escaped quickly. The Prophet ﷺ said. "It has escaped your evil, and you too have escaped its evil."
بَيْنَمَا نَحْنُ مَعَ النَّبِيِّ ﷺ فِي غَارٍ إِذْ نَزَلَتْ عَلَيْهِ وَالْمُرْسَلاَتِ فَإِنَّهُ لَيَتْلُوهَا وَإِنِّي لأَتَلَقَّاهَا مِنْ فِيهِ وَإِنَّ فَاهُ لَرَطْبٌ بِهَا إِذْ وَثَبَتْ عَلَيْنَا حَيَّةٌ فَقَالَ النَّبِيُّ ﷺ اقْتُلُوهَا فَابْتَدَرْنَاهَا فَذَهَبَتْ فَقَالَ النَّبِيُّ ﷺ وُقِيَتْ شَرَّكُمْ كَمَا وُقِيتُمْ شَرَّهَا قَالَ عُمَرُ حَفِظْتُهُ مِنْ أَبِي فِي غَارٍ بِمِنًى