In Brahma-sUtra, the means of achieving Brahman-experience is called *samrAdhanaM* . (III -2-24).
The word gives the same meaning as ‘ArAdhanaM’ or ‘samArAdhanaM’. The worship through bhakti is called ‘ArAdhanA’ in general.
Here, worship through jnAna is called ‘samrAdhanaM’. When the Acharya elaborates on the word in his Bhashya, he says
*praNidhAnaM* is a word synonymous with ‘samAdhi’ or ‘samAdhAnaM’ ;
it means a complete one-pointed unification.
Whenever we think of jnAna-SAdhanA for the purpose of Brahman-experience, we always think, in line with the Acharya’s teachings, that it is a discipline of meditation by making the antaHkaraNaM totally one-pointed.
But the same Acharya here gives priority to bhakti and then only mentions dhyAna and recommends a praNidhAna (profound meditation) in both cases and by both means.