Pindmatra Tirthshraddha Vidhi Puja is a sacred Hindu ritual performed to honor and appease ancestors (Pitru) by offering pindas (rice balls) and conducting rituals near holy rivers or tirthas. This puja is usually done during Pitru Paksha or on specific tithi related to the deceased. It involves purifying oneself, chanting mantras, offering pindas, sesame seeds, and water, and invoking ancestors to bless the family. The ritual ensures peace and salvation (moksha) of the departed souls. Performing it at sacred places like Gaya, Prayag, or Varanasi is considered highly auspicious and grants spiritual merit to the performer and their lineage.