You can do this Shabar mantra chanting for 11, 21, 31, or 41 days, the location and time of mantra chanting ought to be the exact same for the quantity of days you want to do sadhana. You should use Rudraksha or Tulsi rosary to chant the mantra. It https://slimdirectory.com/listings635286/most-powerful-sarv-karya-sidh-shabar-mantra-karya-siddhi-shabar-mantra-most-powerful-shabar-mantra-options