paṇyair evāpadaṁ taret
na śva-vṛttyā kathañcana
Śva-vṛttyā, or “a dog’s profession,” refers to the śūdras, who cannot live without accepting a master. A destitute brāhmaṇa who is suffering intolerably may become a merchant and then a kṣatriya but may never take the position of a śūdra by working in a company or accepting a master. Although a kṣatriya is ordinarily considered more elevated than a vaiśya, the Lord here recommends that distressed brāhmaṇas first accept the vaiśya occupation, since it is not violent.