Kālan (Tamil: காலன்; Sanskrit: Yama or Kāla) is the god of death in the Hindu cosmological framework, the lord of Dharmarājya (the realm of the dead), who dispatches his messengers (yamadūtas) to fetch souls at the time of death and subjects them to the consequences of their karmas. The name 'kālan' in Tamil literally means 'the one who measures time' or 'the lord of time,' reflecting the understanding that death is the supreme temporal reality governing all embodied existence.
In Śrī Vaiṣṇava theology, a crucial distinction is drawn between the fate of the prapanna (one who has performed śaraṇāgati) and that of other souls. For the ordinary sādhaka, death brings an encounter with kālan and the inevitable reckoning of karmic accounts — resulting in further cycles of rebirth (saṃsāra). But for the prapanna, Bhagavān Himself gives the assurance: 'mā śucaḥ' ('do not grieve') — and takes complete responsibility for that soul's liberation. The yamadūtas are unable to approach the prapanna; Bhagavān's own attendants (nitya-sūris) escort the soul directly to Śrī Vaikuṇṭham at the moment of death.
The Divya Prabandham and Āchārya literature is replete with references to kālan as the adversary from whose grip prapatti offers absolute liberation. Tirumaṅgai Āzhvār, Kulasekharāzhvār, and Nammāzhvār all invoke the terror of kālan to heighten the urgency of surrender to Bhagavān. In the Periya Tirumozhi, Tirumaṅgai Āzhvār exhorts the devotee to take refuge in Bhagavān before kālan arrives uninvited. The Āchāryas teach that for the prapanna, kālan holds no power whatsoever — the chains of karma are severed by the Lord's sovereign grace at the moment of prapatti.