Al-Kāfi - Volume 6 > Tools for Slaughtering
Hadith #2

عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ حَمَّادٍ عَنِ الْحَلَبِيِّ عَنْ أَبِي عَبْدِ اللَّهِ ( عليه السلام ) قَالَ سَأَلْتُهُ عَنِ الذَّبِيحَةِ بِالْعُودِ وَ الْحَجَرِ وَ الْقَصَبَةِ قَالَ فَقَالَ عَلِيُّ بْنُ أَبِي طَالِبٍ ( عليه السلام ) لَا يَصْلُحُ الذَّبْحُ إِلَّا بِالْحَدِيدَةِ .

2. Ali ibn Ibrahim has narrated from his father from ibn abu ‘Umayr from Hammad from al-Halabiy who has said the following: “I once asked abu ‘Abd Allah, ‘Alayhi al-Salam, about slaughtering with (sharp) piece of wood, reeds and stone. He (the Imam) said that Ali ibn abu Talib, ‘Alayhi al-Salam, has said, ‘Without iron slaughtering is not proper.’”