Namaste, Related to the gAyatrI are the seven vyAhritis: bhU, bhuva, sva, maha, jana, tapa, satya Of these, the first four are explained in the taittirIya upanishad (1.5). Any information on where the remaining three are discussed ? Do jana, tapa, satya pertain to gAyatrI/ sAvitrI at all ? Or do these refer to some other mantra ? Best regards Shrinivas Gadkari