Grace as the Foundation
In Sri Vaishnava theology, kṛpā (grace/compassion) is one of the essential divine attributes. It is not triggered by the devotee's worthiness but by the Lord's own nature — he is kṛpā-nidhi (ocean of compassion) and dayā-mūrti (embodiment of mercy). The Āzhvārs return again and again to this theme: Bhagavān's grace is causeless (hetu-śūnya) — it descends not because we deserve it but because it is his nature to give.
Kṛpā and Prapatti
In the prapatti system, the devotee surrenders completely, acknowledging their own inability to do anything meritorious. The entire weight of the transaction then falls on kṛpā. The kārpaṇya (helplessness) of the devotee meets the kṛpā of the Lord — and this meeting is prapatti itself. The charama-śloka's promise (ahaṃ tvā sarva-pāpebhyo mokṣayiṣyāmi) is an expression of this kṛpā.
Ācārya Kṛpā
The ācārya's grace (ācārya-kṛpā) is held to be the most accessible form of kṛpā. Pillai Lokācārya's Śrīvacana Bhūṣaṇam declares that the ācārya's grace is the proximate cause (sadyaḥ kāraṇa) of a disciple's liberation. The Āzhvār Nammāzhvār received grace from Nāthamuni, Nāthamuni from Nammāzhvār — this chain of grace flowing down the guruparamparā is how liberation reaches the ordinary devotee.
Related Concepts
Kṛpā is closely related to vātsalya (parental love, which makes faults endearing rather than repellent) and prasāda (the grace expressed as blessings, sacred offering, or divine favor). Together these qualities make the Lord and ācārya truly āśrayaṇīya — worthy of being taken as refuge.