Gītārtha Saṃgraha verse 4

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

pradhāna - the principal or first, chief, head of, prime, major; the most important or essential part; unevolved or root of matter, original source; the creative principle of naturepuruṣa - animating principle, self, consciousness, spirit; a person, man, a human being; peoplevyakta - caused to appear, manifested, apparent, visible, evidentsarva - allīśvara - the lord; god; the supreme being; the supreme soul; personal god; special self; master, lord, prince, king, mistress, queen; ruler of choiceskarman - act, action, performance; work, labour, activity; any religious act or rite; organ of sensebhakti - devotionpūrva - eastward, to the east of; in front, before; former, prior, preceding, previous to, earlier thanśeṣa - remainder

Commentaries and Reflections

Commentary by 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.

Commentary by Paul Harvey:

Overview to the Gītārtha Saṃgraha of Yāmunācārya