It is narrated from Sayyiduna Shaddad bin Aws (may Allah be pleased with him), he says: I have remembered two things from the Noble Prophet (peace and blessings be upon him), he (peace and blessings be upon him) said: Allah Almighty has made excellence obligatory in everything, so when you kill (out of necessity), kill in a good manner, and when you slaughter, slaughter in a good manner. Sharpen your knife and give comfort to the animal being slaughtered.