Arabic (Original)
حَدَّثَنَا إِسْمَاعِيلُ عَنْ خَالِدٍ الْحَذَّاءِ عَنْ أَبِي قِلَابَةَ عَنْ أَبِي الْأَشْعَثِ عَنْ شَدَّادِ بْنِ أَوْسٍ قَالَ ثِنْتَانِ حَفِظْتُهُمَا عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِنَّ اللَّهَ عَزَّ وَجَلَّ كَتَبَ الْإِحْسَانَ عَلَى كُلِّ شَيْءٍ فَإِذَا قَتَلْتُمْ فَأَحْسِنُوا الْقِتْلَةَ وَإِذَا ذَبَحْتُمْ فَأَحْسِنُوا الذَّبْحَ وَلْيُحِدَّ أَحَدُكُمْ شَفْرَتَهُ وَلْيُرِحْ ذَبِيحَتَهُ.
English Translation
Isma'il narrated to us from Khalid al-Hadhdha', from Abu Qilabah, from Abu al-Ash'ath, from Shaddad ibn Aws, who said: Two things I have retained from the Messenger of Allah, peace and blessings be upon him: Indeed Allah, Mighty and Sublime, has prescribed excellence in all things; so when you kill, kill well, and when you slaughter, slaughter well; and let one of you sharpen his blade and let him give ease to the animal he slaughters.