One verse

Srimad Bhagavatam 2.5.37

2.5.37

पुरुषस्य मुखं ब्रह्म क्षत्रमेतस्य बाहव: । ऊर्वोर्वैश्यो भगवत: पद्‍भ्यां शूद्रो व्यजायत ॥ ३७ ॥

purusasya mukham brahma ksatram etasya bahavah urvor vaisyo bhagavatah padbhyam sudro vyajayata

purusasya
of the Supreme Personality of Godhead
mukham
mouth
brahma
is the brahmanas
ksatram
the royal order
etasya
of Him
bahavah
the arms
urvoh
the thighs
vaisyah
are the mercantile men
bhagavatah
of the Personality of Godhead
padbhyam
from His legs
sudrah
the laborer class
vyajayata
became manifested.

The brahmanas represent His mouth, the ksatriyas His arms, the vaisyas His thighs, and the sudras are born of His legs.