cātur-varṇyaṁ mayā sṛṣṭaṁ
tasya kartāram api māṁ
viddhy akartāram avyayam
cātuḥ-varṇyam — the four divisions of human society; mayā — by Me; sṛṣṭam — created; guṇa — of quality; karma — and work; vibhāgaśaḥ — in terms of division; tasya — of that; kartāram — the father; api — although; mām — Me; viddhi — you may know; akartāram — as the nondoer; avyayam — unchangeable.
According to the three modes of material nature and the work associated with them, the four divisions of human society are created by Me. And although I am the creator of this system, you should know that I am yet the nondoer, being unchangeable.
. . .
चातुर्वर्ण्यं मया सृष्टं गुणकर्मविभागशः ।
तस्य कर्तारमपि मां विद्ध्यकर्तारमव्ययम् ॥ १३ ॥