चातुर्वर्ण्यं मया सृष्टं गुणकर्मविभागशः ।तस्य कर्तारमपि मां विद्ध्यकर्तारमव्ययम् ॥
cāturvarṇyaṃ mayā sṛṣṭaṃ guṇakarmavibhāgaśaḥtasya kartāramapi māṃ viddhyakartāramavyayam
The fourfold order was created by Me according to the divisions of quality and active function. Know Me for the doer of this (the fourfold law of human workings) who am yet the imperishable non-doer.
Gītā 4·13That system corresponds… to a divine law, it “was created by me according to the divisions of the gunas and works,”—created from the beginning by the Master of existence. In other words, there are four distinct orders of the active nature, or four fundamental types of the soul in nature, svabhāva and the work and proper function of each human being corresponds to his type of nature.