राम राम महाबाहो भवान्पापमकारषीत् ।
अवधीन्नरदेवं यत् सर्वदेवमयं वृथा ॥ ३८ ॥
rama rama-my dear son Parasurama; mahabaho-O great hero; bhavan-you; papam-sinful activities; akarasit-have executed; avadhit-have killed; naradevam-the king; yat-who is; sarva-deva-mayam-the embodiment of all the demigods; vrtha-unnecessarily.
O great hero, my dear son Parasurama, you have unnecessarily killed the king, who is supposed to be the embodiment of all the demigods. Thus you have committed a sin.