All About Bharatiya Sanatana Dharmam otherwise known as Hinduism : Ch.6.26 and 27 .

26/11/2018
CHAPTER- 6. 26 and 27.
6. Bharateeya Rituals -26 and 27. 

26. The Two Classes Of Pitris

Immediately after death, the Jiva obtains the Ativahika body which is made up of fire, air and ether. Later on, it may have a Yatana Deha for suffering the tortures of hell if it had done great sins on the earth-plane, or a celestial body for enjoying the pleasures of heaven if it had done virtuous actions while living in the world. In the Yatana Deha, the air-element preponderates; while, in the celestial body, the element of fire is dominant. It takes one year for the Jiva to reach the Pitri Loka.

There are two classes of Pitris, viz., the celestial Pitris who are the lords of the Pitri Loka, and the human Pitris who go there after death. Brahma is the paternal grandfather of all. Kasyapa and the other Prajapatis are also Pitris, as they are the original progenitors. Pitri Loka or the Abode of the Pitris is also called by the name Bhuvar Loka.

The word Pitris primarily means the immediate ancestors, viz., father, mother, etc. Sraaddha proper is performed for three generations of Pitris, or to all Pitris. Three cakes are offered to the father, the grandfather and the great grandfather. Two Brahmins are fed first. Seven generations can mutually influence one another by the giving and receiving of food.

27. Pitripaksha And Mahalaya Amavasya

The dark fortnight of the month of Asvayuja is known as the Pitripaksha or the fortnight of the month specially sanctified for offering oblations to the departed ancestors. And the last day, the day of the new moon, is considered as the most important day in the year for performing obsequies and like rites.

Now, ordinarily, the orthodox Hindus offer oblation of water—Tarpana-Arghya—to the departed every new-moon day. The prescribed rites are also performed every year on the anniversary of the day of death. This is the Sraaddha ceremony. What, then, is the special import of these observances particularly during the Asvayuja Krishna Paksha? The reason is that such ceremonies done during this fortnight have a very special effect. The offerings reach the Pitris immediately and directly, due to a boon from Lord Yama. The occasion for the boon arose as follows:

To be continued ..