Tattva Bodhaतत्त्वबोधः
Tattva Bodha · passage 32
Bliss
आनन्दः कः? सुखस्वरूपः । एवं सच्चिदानन्दस्वरूपं स्वात्मानं विजानीयात् ।
ānandaḥ kaḥ? sukhasvarūpaḥ | evaṃ saccidānandasvarūpaṃ svātmānaṃ vijānīyāt |
What is ānanda, bliss? Its nature is happiness. So may one know one's own Self as being, consciousness, and bliss.
In plain words
What is ānanda (bliss)? It is of the nature of happiness. In this way, one should know one's own Self as being-consciousness-bliss.