Religion has three bases. Out of these, yagya, study and charity are the first basis. A religious follower should adopt yagya in his life. All the works of charity and help come under yagya. Nowadays, it is used only for havan (sacrificial fire). However, yagya has a broad meaning. Acquiring knowledge of the five great elements (panch mahabhutas) created by God and taking help from them is yagya.