Hadith
وَحَدَّثَنَا هَارُونُ بْنُ سَعِيدٍ الأَيْلِيُّ، حَدَّثَنَا ابْنُ وَهْبٍ، حَدَّثَنِي أُسَامَةُ، أَنَّ نَافِعًا، حَدَّثَهُ أَنَّ أَبَا لُبَابَةَ مَرَّ بِابْنِ عُمَرَ وَهُوَ عِنْدَ الأُطُمِ الَّذِي عِنْدَ دَارِ عُمَرَ بْنِ الْخَطَّابِ يَرْصُدُ حَيَّةً بِنَحْوِ حَدِيثِ اللَّيْثِ بْنِ سَعْدٍ .
Nafi' reported that Abu Lubaba happened to pass by Ibn 'Umar who lived in the fortified place near the house of 'Umar b. Khattab and was busy in keeping his eyes upon a snake and killing it, the rest of the hadith is the same
Sahih
Sahih Muslim 5834 ·Book 39, Hadith 185·Also available on sunnah.com·