One verse

Srimad Bhagavatam 3.6.32

3.6.32

विशोऽवर्तन्त तस्योर्वोर्लोकवृत्तिकरीर्विभो: । वैश्यस्तदुद्भवो वार्तां नृणां य: समवर्तयत् ॥ ३२ ॥

viso ’vartanta tasyorvor loka-vrttikarir vibhoh vaisyas tad-udbhavo vartam nrnam yah samavartayat

visah
means of living by production and distribution
avartanta
generated
tasya
His (the gigantic form’s)
urvoh
from the thighs
loka-vrttikarih
means of livelihood
vibhoh
of the Lord
vaisyah
the mercantile community
tat
their
udbhavah
orientation
vartam
means of living
nrnam
of all men
yah
one who
samavartayat
executed.

The means of livelihood of all persons, namely production of grains and their distribution to the prajas, was generated from the thighs of the Lord’s gigantic form. The mercantile men who take charge of such execution are called vaisyas.