Gītārtha Saṃgraha verse 4

pradhāna-puruṣavyakta-sarveśvara-vivecanam |
karmadhārbhaktirityādiḥ pūrvaśeṣo’ntimoditaḥ ||

pradhāna - prime; chief; major; the most important or essential part; unevolved or root of matter, original source; the creative principle of naturepuruṣa - animating principle, self, consciousness, spiritvyakta - caused to appear, manifested, apparent, visible, evidentsarva - allīśvara - the lord; the supreme soul; personal god; special self; ruler of choiceskarman - act, action, performance; work, labour, activity; any religious act or rite; organ of sensebhakti - devotionpūrva - precedingśeṣa - remainder

Commentaries and Reflections

TKV Desikachar:

What is most vital to a person for everlasting happiness
is to understand the nature of consciousness
and the Lord and his created entities.

Paul Harvey:

Overview to the Gītārtha Saṃgraha of Yāmunācārya