The Central Ontological Doctrine
Śarīra-śarīrī-bhāva (Sanskrit: शरीरशारीरिभाव) — the body-soul relationship — is the foundational ontological insight of Viśiṣṭādvaita Vedānta. Rāmānuja defines it thus: An entity is a 'body' (śarīra) of another when it is (1) entirely supported by that other (ādhārya), (2) entirely controlled by that other (niyāmya), and (3) exists solely for that other's purposes (śeṣa). By this definition, both chit (souls) and achit (matter) are the body of Brahman.
Why This Matters Philosophically
This insight resolves the ancient Vedic puzzle of identity and difference: Upaniṣadic statements like 'The earth is a body for Brahman' are not metaphor but ontological fact. Every soul is Brahman's body — which means that when a soul says 'I,' in the ultimate sense that 'I' is Brahman's, not the soul's alone. Yet the soul is not dissolved into Brahman; it retains its distinct identity as Brahman's body-aspect.
Practical and Devotional Implication
This doctrine has profound devotional implications: if all souls are Brahman's body, then no soul is ever truly separated from Him, even in bondage. The apparent separation is due to karma-caused body-identification, not ontological separation. This understanding drives the prapanna toward confidence (viśvāsa) that the Lord will save — for can a soul abandon its own body?
The Definition of Brahman
Rāmānuja's famous definition: 'Brahman is He whose body consists of both the sentient (chit) and non-sentient (achit) in all their varied states, while He Himself is the Inner Soul (antaryāmin) controlling them, and who is thus called Nārāyaṇa.' This is Viśiṣṭādvaita's answer to 'Who is Brahman?'