According to scriptures, lighting a Yam Diya for Lord Yamraj during Diwali festivities pleases the deity of death. Devotees observe this ritual to seek divine blessings, ensure their families' longevity, and ward off the fear of untimely accidents or premature death. As per Skanda Purana, Yam Diya is lit on Trayodashi Tithi of Krishna Paksha in the month of Kartik.