BG 18.41

ब्राह्मणक्षत्रियविशां श‍ूद्राणां च परन्तप ।
कर्माणि प्रविभक्तानि स्वभावप्रभवैर्गुणै: ॥ ४१ ॥

āhmaṇa-kṣatriya-viśāṁ
śūdrāṇāṁ ca parantapa
karmāṇi pravibhaktāni
svabhāva-prabhavair guṇaiḥ

brāhmaṇa — the brāhmaṇas; kṣatriya — the kṣatriyas; viśām — the vaiśyas; śūdrāṇām — the śūdras; ca — and; parantapa — O subduer of the enemies; karmāṇi — activities; pravibhaktāni — are divided; svabhāva — own nature; prabhavaiḥ — born of; guṇaiḥ — by the modes of material nature.

TRANSLATION

Brāhmaṇas, kṣatriyas, vaiśyas and śūdras are distinguished by their qualities of work, O chastiser of the enemy, in accordance with the modes of nature.

PURPORT