The modifier nÅ« refers to the observer’s side of something, so something in front of something else. This makes nÅ« partially synonymous with hÄl. The difference is that nÅ« refers to the observer’s position, and hÄl does not. If something has an obvious front, then use hÄl, otherwise use nÅ«. So, rÄ NP nÅ« is to this side of NP and rÅ« NP nÅ« is from this side of NP.
rÄjanÅ« is rÄ NP nÅ« without a specified location, and so means ‘to this side’.
Likewise rÅ«janÅ« is rÅ« NP nÅ« without a specified location, and so means ‘from this side’.