Reflecting on our actions will tell us something about oneself.
The word means going toward oneself.
The re-action of Tapas should lead you towards Svādhyāya.
Also means study of texts.
For example Haṭha Yoga Pradīpikā and Pūrṇa Matsyendrāsana.
Is the effect different from what it said will happen?
This leads to Svādhyāya and Anumāna or to a teacher.”
– TKV Desikachar France 1983