All may slaughter, and their slaughtering is valid, except a deaf-mute, one who is mentally deranged, and a minor, lest they bungle their slaughtering. But any of these who slaughtered with others watching them, their slaughtering is valid. That which a gentile slaughters is neveilah and defiles by carrying. [If] one slaughters at night, and similarly, if a blind man slaughters, his slaughtering is valid. [If] one slaughters on the Sabbath or on Yom Kippur, even though he is liable to pay with his life, his slaughtering is valid.