Sahih al-Bukhari 4930
Narrated `Abdullah:
We were with the Prophet (ﷺ) when Surat Wal-Mursalat was revealed to him. While we were receiving it 
from his mouth, a snake suddenly came and we ran to kill it, but it outstripped us and entered its hole 
quickly. Allah's le said, "It has escaped your evil, and you too, have escaped its evil."
حَدَّثَنِي مَحْمُودٌ، حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ إِسْرَائِيلَ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم وَأُنْزِلَتْ عَلَيْهِ وَالْمُرْسَلاَتِ، وَإِنَّا لَنَتَلَقَّاهَا مِنْ فِيهِ فَخَرَجَتْ حَيَّةٌ، فَابْتَدَرْنَاهَا فَسَبَقَتْنَا فَدَخَلَتْ جُحْرَهَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏
"‏ وُقِيَتْ شَرَّكُمْ، كَمَا وُقِيتُمْ شَرَّهَا ‏"‏‏.‏