As per sage agasthiyar pithru dosha changes in to sarpha dosha and changes in to brammahathi dosha if not noticed. It leads to family disputes, medical expenses and business collapse. To avoid this Worshipping kala bairavar, feeding people and feeding cows will remove this issues. https://siththanarul.blogspot.com/2023/08/1393.html?m=1
Remedies revealed by ancestors and ancient rishis