There are many bir russ filled baniyaa in sri dasam granth and these mainly describe the scenes of battelfield. To me shastar naam mala bani is unique since it specifically does ustat of various shastars. Has Bhai Sahib Randhir Singh ji written or mentioned anything about the greatness of this bani?
ਸਤਿਗੁਰਬਚਨਕਮਾਵਣੇਸਚਾਏਹੁਵੀਚਾਰੁ॥