אַ֥ךְ אִם־י֛וֹם א֥וֹ יוֹמַ֖יִם יַעֲמֹ֑ד לֹ֣א יֻקַּ֔ם כִּ֥י כַסְפּ֖וֹ הֽוּא׃ (ס)
Notwithstanding if he continue a day or two, he shall not be punished; for he is his money.
Read midrashic interpretation of Exodus 21:21: and classical rabbinic exegesis.