आत्मैत्र योनिरुपादानकारणं नान्यदिति आत्मयोनिः ।निमित्तकारणमपि स एवेति दर्शयितुं स्वयंजातः इति ; 'प्रकृतिश्च प्रतिज्ञादृष्टान्तानुपरोधान्' इत्यत्र स्थापितमुभ-
In plain words
The Self alone is the womb — the material everything is made of — and nothing else is: hence the name Ātmayoniḥ, He whose source is Himself. And to show that He is equally the maker, the next name is Svayaṃjātaḥ, the self-born. In the sūtra 'and the material cause too, since this conflicts neither with the thesis nor with the illustration,' both kinds of causality were already settled—
Close to the Sanskrit
The Self alone is the womb, that is, the material cause, and not anything else — thus, Ātmayoniḥ. In order to show that He alone is the efficient cause as well: Svayaṃjātaḥ. In the sūtra 'And the material cause too, since there is no conflict with the thesis or the illustration,' there has been established the [causality] of both—