Hadith
وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَإِسْحَاقُ بْنُ إِبْرَاهِيمَ، جَمِيعًا عَنِ ابْنِ عُيَيْنَةَ، عَنِ الأَسْوَدِ بْنِ قَيْسٍ، بِهَذَا الإِسْنَادِ وَقَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي غَارٍ فَنُكِبَتْ إِصْبَعُهُ .
It has been narrated on the authority of Aswad b. Qais who said:The Messenger of Allah (ﷺ) was in a cave (or raid) when his finger was hurt
Sahih
Sahih Muslim 4655 ·Book 32, Hadith 137·Also available on sunnah.com·