Pranidhana is a loving devotion. Pranidhana involves worship; with the body, mind and speech in a pure state.
In Him, the seed of all-knowing, omniscient, is not exceeded. This God is the unexcelled seed of all knowledge.
Ishwara is the Teacher of the ancients too, not limited by time. God is the first, foremost and absolute guru, unconditioned by time.
By repeating pranava, its meaning and understanding of it (gained). It should be repeated, that is, japa of it to be done and its meaning should be understood.
Ishwara is a Purusha who is pure, calm, free and without appendants. Appendants of life-state, life-period and life-experience.