Arabic (Original)
حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ قَالَ حَدَّثَنَا شُعْبَةُ عَنْ خَالِدٍ عَنْ أَبِي قِلَابَةَ عَنْ أَبِي الْأَشْعَثِ عَنْ شَدَّادِ بْنِ أَوْسٍ قَالَ ثِنْتَانِ حَفِظْتُهُمَا مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ إِنَّ اللَّهَ كَتَبَ الْإِحْسَانَ عَلَى كُلِّ شَيْءٍ فَإِذَا قَتَلْتُمْ فَأَحْسِنُوا الْقِتْلَةَ وَإِذَا ذَبَحْتُمْ فَأَحْسِنُوا الذِّبْحَةَ وَلْيُحِدَّ أَحَدُكُمْ شَفْرَتَهُ وَلْيُرِحْ ذَبِيحَتَهُ.
English Translation
Muhammad ibn Ja'far narrated to us, he said: Shu'ba narrated to us, from Khalid, from Abu Qilaba, from Abu al-Ash'ath, from Shaddad ibn Aws, who said: Two things I memorized from the Messenger of Allah, peace and blessings be upon him, when he said: Indeed Allah has prescribed excellence in all things. So when you kill, kill well, and when you slaughter, slaughter well. Let each of you sharpen his blade and let him give ease to the animal he slaughters.