The nature of Brahmanas, Kshatriyas, Vaishyas, and Shudras are due to their respective inherent dispositions. The meaning is that their past Karma has been the cause of determining births as Brahmanas etc. The Sattva and other Gunas are the result of such Karma. The Sattva-guna is born from the inherent nature of the Brahmana becoming dominant by suppressing the qualities of Rajas and Tamas. The quality of Rajas originates from the inherent nature of the Kshatriya becoming dominant by suppressing qualities of Sattva and Tamas. Tamoguna arises from the inherent nature of the Vaishya, becoming dominant in a little way by suppressing Sattva and Rajas. The duties and works assigned to them according to the Gunas constituting their inherent nature, are expounded and allotted by the Shastras in the order described. For the Shastras analyse that the Brahmanas etc., possess such and such attributes and such and such are their duties and occupations.