18.44

कृषिगोरक्ष्यवाणिज्यं वैश्यकर्म स्वभावजम् ।
परिचर्यात्मकं कर्म शूद्रस्यापि स्वभावजम् ॥४४॥

kṛṣi-go-rakṣya-vāṇijyaṁ
vaiśya-karma svabhāva-jam
paricaryātmakaṁ karma
śūdrasyāpi svabhāva-jam

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

Farming, cattle raising and business are the qualities of work for the vaiśyas, and for the śūdras there is labor and service to others.