Verse 15

अविद्यामपि ये युक्त्या साधयन्ति सुखात्मिकाम् ।ते ह्यविद्यामया एव नत्वात्मज्ञास्तथाक्रमाः

In plain words

Those who by some device accomplish even avidyā, in its pleasant form -- they, proceeding in that way, are made of avidyā alone, and are not knowers of the Self.