This Sanskrit Mantra (मंत्र, Maṁtra) is of relatively new. In the ancient literature of the Hatha-Yoga (हठयोग, Haṭha-Yoga) text, it is almost exclusively Shiva who is worshiped as the god of Yoga. Additionally, in the comments to the Yoga-Sutra (योगसूत्र, Yoga-Sūtra) compiled by Patanjali (पतञ्जलि, Patañjali), the personal deity Ishvara (ईश्वार, Īśvāra) is often put on equal footing with Shiva.With this Mantra (मंत्र, Maṁtra), Patanjali (पतञ्जलि, Patañjali) is worshiped as Shesha (शेष, Śeṣa) or Ananta (अनन्त, Ananta) which clearly indicates a Vaishnava origin. It appears only in the tradition of Krishnamacharya, where each student received and passed on their own variation of this Mantra (मंत्र, Maṁtra).BKS Iyengar, like Krishnamacharya, can be assigned to Vaishnava Hinduism. The mantra BKS Iyengar teaches us, therefore, stems undoubtedly from this tradition.
Salutation to Ananta, King of Nagas
सहस्रविधृत विश्वं भर ।
sahasra-vidhr̥ta viśvaṁ bhara ।
The Soul (Jiva) beams like a jewel on a snake head
1000 times different, carrying everything.
नागराजाय नमः ।
nāgarājāya namaḥ ।
Respectful salutation in front of the Ananta who is carrying the Firmament,
the King of the Nagas (Snake Gods).
शङ्खचक्रासि धारिणम् ।
śaṅkhacakrāsi dhāriṇam ।
The upper body of human shape, carrying
a mussel horn (original tone), a discus (infinity) and a sword (power of
प्रणमामि पतञ्जलिम् ॥
sahasra śirasaṁ śvetaṁ"
praṇamāmi patañjalim ॥
having 1000 bright heads,
I bow to Patanjali.