I said: Messenger of Allah, tell me when one of us catches game and has no knife; may he slaughter with a flint and a splinter of stick. He said: Cause the blood to flow with whatever you like and mention Allah's name. (Using translation from Abū Dāʾūd 2824)
أَنَّهُ قَالَ قُلْتُ يَا رَسُولَ اللهِ إِنَّ أَحَدَنَا يَصِيدُ الصَّيْدَ وَلَيْسَ مَعَهُ شَيْءٌ يُذَكِّيهِ بِهِ إِلَّا مَرْوَةٌ أَوْ شُقَّةُ عَصًا فَقَالَ أَمْرِرِ الدَّمَ بِمَا شِئْتَ وَاذْكُرِ اسْمَ اللهِ ﷻ