svabhāva-prabhavair guṇaiḥ

brahmana-the brahmanas; ksatriya-the ksatriyas; visam-the vaisyas; sudranam-the sudras; ca-and; parantapa-O subduer of the enemies; karmani-activities; pravibhaktani-are divided; svabhava-own nature; prabhavaih-born of; gunaih-by the modes of material nature.