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.

It is said regarding the animal olah (Lev. 1:9): a fire-offering, a pleasing aroma, and regarding the bird olah (Lev. 1:17): a fire-offering, a pleasing aroma, and regarding the minchah-offering (Lev. 2:2): a fire-offering, a pleasing aroma. This teaches that [there is no difference] between the one who offers much and the one who offers little, as long as he directs his mind to Heaven.