Exodus 22:2

אם זרחה השמש עליו IF THE SUN SHONE UPON HIM — This is only a metaphorical expression signifying: if the fact is clear to you that he is peaceably disposed towards you. The simile is: just as the sun brings peace (happiness) to the world so if it is evident to you that he did not come with the intention of killing, even if the owner of the property would resist him (Sanhedrin 72a), as, for instance, when a father breaks in to steal the money of his son, for it is certain that the father cherishes feelings of pity for his child and the matter of taking human life is not in his thoughts at all, — then דמים לו, then he is to be regarded as a living man (cf. Rashi’s explanation of אין לו דמים v. 1.), and it is murder if the householder kills him. שלם ישלם means the thief shall only restore the money he has stolen but is not subject to the death penalty. Onkelos who renders אם זרחה השמש עליו by, “If the eye of witnesses fall upon him” chose a different way of explaining the verse, namely, that if witnesses surprise him before the householder appears, and when the householder is going towards him they warn him not to kill him (the thief), then דמים לו, he is punishable if he kills him; for since there are people watching him the thief surely has no thought of taking human life and will not kill the owner of the property.

אִם־זָרְחָ֥ה הַשֶּׁ֛מֶשׁ עָלָ֖יו דָּמִ֣ים ל֑וֹ שַׁלֵּ֣ם יְשַׁלֵּ֔ם אִם־אֵ֣ין ל֔וֹ וְנִמְכַּ֖ר בִּגְנֵבָתֽוֹ׃

If the sun be risen upon him, there shall be blood shed on his account. He should make full restitution; if he have nothing, then he shall be sold for his theft.