The "Shariyat-Ki-Sugmad" is a set of two books and may now be considered scripture of Eckankar, however there are also a series of Satsang writings, that are available with yearly membership in Eckankar.
The "Shariyat-Ki-Sugmad", which means "Way of the Eternal", is the holy scripture of Eckankar. There are also a series of Satsang writings, that are available with yearly membership in Eckankar.