Avatarika
एष उ ।न केवलं कार्यकारणयोरेवात्मा प्राणो रूपक-र्मभूतयोः ; किं तर्हि ? ऋग्यजुःसाम्नां नामभूतानामात्मेतिसर्वात्मकतया प्राणं स्तुवन्महीकरोत्युपास्यत्वाय--
In plain words
Nor is he merely the Self of cause and effect, which manifest as form and action. What then? He is also the Self of the Ṛg, Yajus, and Sāman mantras, which have manifested as names. Thus, by praising Prana in his all-inclusive nature as the universal Self, the teacher exalts him so that he may be meditated upon—
Close to the Sanskrit
This one indeed. Not only the self of cause and effect which have become form and action; what then? Praising Prana as the Self of the Ṛg, Yajus, and Sāman which have become names, by virtue of being the all-self, he magnifies it for the sake of meditation--