You can do this Shabar mantra chanting for 11, 21, 31, or 41 times, the area and time of mantra chanting needs to be precisely the same for the number of times you ought to do sadhana. You need to use Rudraksha or Tulsi rosary to chant the mantra. https://vashikaran11008.thelateblog.com/32916597/top-guidelines-of-most-powerful-sarv-karya-sidh-shabar-mantra-karya-siddhi-shabar-mantra-most-powerful-shabar-mantra