You can do this Shabar mantra chanting for eleven, 21, 31, or 41 times, the location and time of mantra chanting needs to be the exact same for the amount of days you wish to do sadhana. You should use Rudraksha or Tulsi rosary to chant the mantra. It https://andresjyncq.ampedpages.com/the-greatest-guide-to-most-powerful-sarv-karya-sidh-shabar-mantra-karya-siddhi-shabar-mantra-most-powerful-shabar-mantra-59463441