You are able to do this Shabar mantra chanting for 11, 21, 31, or forty one days, the place and time of mantra chanting need to be the exact same for the number of days you want to do sadhana. You need to use Rudraksha or Tulsi rosary to https://bentdirectory.com/listings13061585/the-definitive-guide-to-most-powerful-sarv-karya-sidh-shabar-mantra-karya-siddhi-shabar-mantra-most-powerful-shabar-mantra