Like each of the twenty Yogopanishads, these three select Upanishads have elaborated on certain technique/s or issue/s of yoga which are not easily available in any of the published hatha literature.
Contribution of Yogopanishads lie in their effort to make use of Hatha techniques to achieve the state of Absolute Oneness (Advaita). Advaita theory, which hails ‘the non-dual state or Truth’ to be the Supreme, does not view “suffering” differently from “duality”’. For Freedom from suffering, it recommends hatha practices as effective means. With this spirit Yogopanishads try to synthesize world-view of both the diverse philosophical systems of duality and non-duality. This is brilliantly displayed in these texts.