आत्मन्यकारणेनैव भूतानां कारणेन च ।सृष्ट्यर्थं वपुरात्तं हि वासुदेवमयात्मना
In plain words
Within the ātman, by the ātman made of Vāsudeva -- itself without cause, and yet the cause of beings -- a body was indeed assumed for the sake of creation.
आत्मन्यकारणेनैव भूतानां कारणेन च ।सृष्ट्यर्थं वपुरात्तं हि वासुदेवमयात्मना
Within the ātman, by the ātman made of Vāsudeva -- itself without cause, and yet the cause of beings -- a body was indeed assumed for the sake of creation.