śaunaka uvācakasya hetor nijagrāhakaliṁ digvijaye nṛpaḥnṛdeva-cihna-dhṛk śūdra-ko 'sau gāṁ yaḥ padāhanattat kathyatāṁ mahā-bhāgayadi kṛṣṇa-kathāśrayam
Why did he punish him but not kill him (nijagraha)? That low sudra deserved to be killed.