If he continue a day or two—i.e; "If the slave does not die till a day or two afterwards." Compare the provision in Exodus 21:19, with respect to persons who were not slaves. No special callousness to the sufferings of slaves is implied.
He is his money. The slave had been purchased for a stun of money, or was at any rate money' s worth; and the master would suffer a pecuniary loss by his death.