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Takhrij Hadith 1517: "Two things I memorized from…"
It was narrated from Shaddad ibn Aws, he said:
“
Two things I memorized from the Messenger of Allah (peace and blessings be upon him). He said: Indeed, Allah has prescribed excellence in all things. So when you kill, kill in the best manner, and when you slaughter, slaughter in the best manner. Let one of you sharpen his blade and let him spare suffering to his slaughtered animal”