Kancho, there is nothing to do with daural suruwal or rastriyata or Parmanada Jha for that matter. It is all in your head. The burning question is why Nepali Muslims who are on their way to hujj are obliged to wear something they actually are not supposed to. 

Are you familiar with the term Shirk? Wikipedia it and you will understand the gist of this discussion. Can you imagine being a pilgrim on the way to Mecca with garland round your neck? Is it what you are supposed to do or was that something you were forced to do ? 

* edited for the typo