Laughter Mudra – mudra for prosperity and wisdom Laughter Mudra induces wisdom and lightness in demeanor. You feel like a royal. The mudra was named laughter mudra because a prosperous person always laughs and smiles. The mudra is said to bring prosperity. You have to join tip of the thumb with tips of index, middle and ring finger. The little finger will remain comfortably extended. You can do it for 10 minutes or as comfortable while seated on a chair or while in Sukhasana or Padmasana.