MANDUKYA UPANISHAD : Chapter-1. "AGAMA PRAKARANA" ( The Scriptural Treatise ) Mantram-2, Discussion- 13.
( The Scriptural Treatise )
"Sarvam hyetad Brahma, ayam-atma Brahma,
so' yam-atma catuspat."
sarvam - all;
hi - indded;
brahma - this (is) BRAHMAM;
ayam atma brahma - this Self ( ATMA IN US ) is BRAHMAM;
sah - That ( BRAHMAM );
ayam atma - ( which is ) this Self ( ATMA IN US );
catuspat - ( is ) covered with four quarters ( PARTS ).
"All this is verily BRAHMAM. This is BRAHMAM. This JIVATMA ( ATMA WITHIN US ) has four quarters ( parts )."
Here the Sruti means only the four fields of activities and that the same Atman seems to acquire for itself four different aspects, though in fact all the initial three devolve themselves into the last quarter.
How it is so, we shall see as we follow the descriptions of the Upanishadik mantram-s.
For the time being, it is sufficient to understand, as Sri Swami Adi Sankaracharya would have it, that the quarters are like fractions of loose change in the monetary world.
Twenty five Paise (coin ) is a bit, two 25 paise bits become one 50 paise bit, the three 25 paise bits, become 75 paise bit, when the fourth 25 paise bit is added to it, they will become one united synthetic whole, in a one rupee coin.
In the rupee coin, there is noneof the smallness or limitation of the individual and separatively existing 25 paise bits.
To be continued ...