One verse

Srimad Bhagavatam 10.24.21

10.24.21

कृषिवाणिज्यगोरक्षा कुसीदं तूर्यमुच्यते । वार्ता चतुर्विधा तत्र वयं गोवृत्तयोऽनिशम् ॥ २१ ॥

kṛṣi-vāṇijya-go-rakṣā kusīdaṁ tūryam ucyate vārtā catur-vidhā tatra vayaṁ go-vṛttayo ’niśam

kṛṣi
farming
vāṇijya
commerce
go-rakṣā
and protecting cows
kusīdam
banking
tūryam
the fourth
ucyate
is said
vārtā
the occupational duty
catuḥ-vidhā
fourfold
tatra
among these
vayam
we
go-vṛttayaḥ
engaged in protecting the cows
aniśam
without cessation

The occupational duties of the vaiśya are conceived in four divisions: farming, commerce, cow protection and moneylending. Out of these, we as a community are always engaged in cow protection.