18:44  

कृषिगौरक्ष्यवाणिज्यं वैश्यकर्म स्वभावजम् ।
परिचर्यात्मकं कर्म शूद्रस्यापि स्वभावजम् ॥१८- ४४॥

Transliteration

kRRiShigaurakShyawaaNijyaM waishyakarma swabhaawajam ।

paricharyaatmakaM karma shoodrasyaapi swabhaawajam ॥१८- ४४॥

Translation

Agriculture, cattle-raising, commerce [are] vaishya acts deriving from [their] character.
Acts of the nature of servitude derive from the character of shudras.

Translation

Those who are good in cultivation, cattle rearing, business, trade, and industry are known as Vaishyas. Those who do service and labor type work are classed as Shudras.

Translation

Farming, cow protection and business are the qualities of work for the vaisyas, and for the sudras there is labor and service to others.