Tāpa — Branding the Body as Bhagavān's Own
Tāpa ('heat, branding'; from tap = 'to heat, to burn') is the first of the five rites of pañca-saṃskāra — the initiation ceremony that marks the formal entry into the Śrī Vaiṣṇava community. (Note: tāpa here refers specifically to the branding rite, not to tapas which denotes ascetic austerity.)
The five rites of pañca-saṃskāra are: tāpa (branding), puṇḍra (marking with sacred ūrdhva-puṇḍra marks), nāma (receiving a new Śrī Vaiṣṇava name), mantra (receiving the sacred mantra — Aṣṭākṣara, Dvaya, and Carama Śloka), and yāga (the rite of worship). Among these, tāpa is the most physically distinctive and symbolically powerful.
In the tāpa rite, the Āchārya heats metal seals (cakrāṅka mudrā — the seal of the discus, and śaṅkhāṅka mudrā — the seal of the conch) and brands the upper arms of the disciple with them. The right arm receives the cakra (Sudarśana cakra) and the left arm the śaṅkha (Pañcajanya). The marks assert: 'This body belongs to Bhagavān. It bears the seal of the Lord's own weapons. It is no longer an independent entity pursuing its own desires — it is the property of Śrīman Nārāyaṇa, who has placed His mark upon it.'
The Āzhvārs sang of bearing the marks of Bhagavān's śaṅkha and cakra as their supreme fortune. Nammāzhvār's Tiruvāimoḷi celebrates the cakra-mudrā as the mark that announces the soul's identity as Bhagavān's own (daivam = 'sealed by the Lord'). Bearing these marks in everyday life is a constant, embodied reminder of the soul's true identity as Bhagavān's śeṣa.