But among the six acts (ordained) for him three are his means of subsistence, (viz.) sacrificing for others, teaching, and accepting gifts from pure men.
त्रयो धर्मा निवर्तन्ते ब्राह्मणात् क्षत्रियं प्रति । अध्यापनं याजनं च तृतीयश्च प्रतिग्रहः ॥ ७७ ॥
(Passing) from the Brahmana to the Kshatriya, three acts (incumbent on the former) are forbidden, (viz.) teaching, sacrificing for others, and, thirdly, the acceptance of gifts.
वैश्यं प्रति तथैवैते निवर्तेरन्निति स्थितिः । न तौ प्रति हि तान् धर्मान् मनुराह प्रजापतिः ॥ ७८ ॥
The same are likewise forbidden to a Vaisya, that is a settled rule; for Manu, the lord of creatures (Pragapati), has not prescribed them for (men of) those two (castes).
To carry arms for striking and for throwing (is prescribed) for Kshatriyas as a means of subsistence; to trade, (to rear) cattle, and agriculture for Vaisyas; but their duties are liberality, the study of the Veda, and the performance of sacrifices.
Among the several occupations the most commendable are, teaching the Veda for a Brahmana, protecting (the people) for a Kshatriya, and trade for a Vaisya.