kṛṣi — plowing; go — of cows; rakṣya — protection; vāṇijyam — trade; vaiśya — of a vaiśya; karma — duty; svabhāva–jam— born of his own nature; paricaryā — service; ātmakam — consisting of; karma — duty; śūdrasya — of the śūdra; api — also; svabhāva–jam — born of his own nature.