the ocean of transmigration, which is difficult to cross over and which has waves of birth and death
भवbhava
become
कृतार्थःkṛtārthaḥ
having achieved the goal
ब्रह्म–रूपेण संस्थःbrahma–rūpeṇa saṃsthaḥ
staying as Brahman
Translation
With a disciplined mind and with purity of intellect you directly realise this Atman within yourself as ‘I am this’. Gloriously cross over the ocean of transmigration – which is difficult to cross over and which has waves of birth and death – and having achieved the goal establish yourself as Brahman.
Annotation
1) ‘Disciplined mind’ – means the mind which has undergone the three tier process of śravaṇam, mananam and nididhyāsanam. 2) ‘I am this’ – the realisation should be in the form of non–difference between the the Self and the Brahman (Jagadguru).