Panch Mahayagya - the five daily sacrifices
The five Panch Mahagya are as follows -Dev Yagya
Rishi Yagya
Pirtri Yagya
Manushya Yagya
Bhoot Yagya
Dev Yagya- Oblation to gods, and perform Puja and Havan etc.
Rishi Yagya- Worship of the ancient sages and seers.
Pitri Yagya- Libations of food and water to the manes or departed souls.
Manushya Yagya- Offering food to human beings who are in need of it.
Bhoot Yagya - Offering food to other creatures..