Sarpa Samskaara or Sarpa Dosha Parihara is much required if the family was intentionally or unintentionally involved in harming a snake in the past. The snake is considered as a soul, similar to that of humans. For appropriate deliverence for such souls, Naga Narayana Bali is strongly recommended. This can be observed in natal charts when different planets obtrude between Rahu and Ketu. Naga Prathista or Sarpa Samskaara or Sarpa Dosha Parihara is therefore performed to absolve from the ill effects of these curses.