What is the meaning of 'Shraddha' in the context of the story about Balaji Patil Nevasakar?

In the narrative provided, the term 'Shraddha' refers to an anniversary ceremony for Balaji Patil. As detailed in Chapter 35, food was prepared for this ceremony, but the number of guests unexpectedly tripled, causing great anxiety for the woman of the house. She feared humiliation, but Nevasakar's mother-in-law displayed immense faith. She declared that with the powerful Sai present, there was no need to worry. To resolve the food shortage, she took a handful of Udi, put it in each pot of food, and covered them, demonstrating faith in a moment of crisis during the Shraddha ceremony.