"OM TAT SAT"  ARE THREE DESIGNATIONS OF BRAHMAN [GOD]. "OM " SYLLABLE  FORM [SABD BRAHMAN] IS BEGINNING OF UNIVERSE. " TAT"  THE, INDEFINABLE INFINITE, PERMANENT THE PRESERVER OF UNIVERSE IS MIDDLE AND  "SAT"   [TRUTH] ULTIMATE REALITY IN WHICH EVERYTHING WILL DISSOLVE IS END.