It contains the mystery of Vedas and other subject that have been explained by me; (it contains) the various hymns of the Vedas, Upanishads with their Angas.
ब्रह्मवेदरहस्यं च यच्चान्यत्स्थापितं मया। साङ्गोपनिषदां चैव वेदानां विस्तरक्रिया॥