On the authority of Abu Yaala Shaddad bin Aus (Radhiallahu anhu) that the Messenger of Allah (Sallallaahu ‘alaihi wasallam) said:
“Verily Allah has prescribed proficiency in all things. Thus, if you kill, kill well; and if you slaughter, slaughter well. Let each one of you sharpen his blade, and let him spare suffering to the animal he slaughters.”
It was related by Muslim.