Śeṣoditya-Sūrya-nyāsa, Soma-sādhana, Graha-pūjā, and Bhauma-vrata-vidhi
सूर्यं च मूर्ध्नि वदने हृदि गुह्ये च पादयोः । सद्यादिपञ्च ह्रस्वाद्यान् न्यसेन्ङे हृदयोंऽतिमान् ॥ ८ ॥
sūryaṃ ca mūrdhni vadane hṛdi guhye ca pādayoḥ | sadyādipañca hrasvādyān nyasenṅe hṛdayoṃ'timān || 8 ||
行者当作安置(nyāsa):将苏利耶(Sūrya,日神)安于头顶、口、心、隐秘处与双足;并复安置以“sadya…”起首之五音(五咒),连同短元音及其余诸音,依次圆满心部安置(hṛdaya-nyāsa)。
Sanatkumara (in instruction to Narada, within Vedanga/ritual context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
It teaches nyāsa—sacralizing the practitioner’s body by assigning divine power (here, Sūrya and a pentad of mantras) to specific loci, making the body a fit support for mantra-japa and ritual contemplation.
By prescribing embodied worship: devotion is expressed not only as feeling but as disciplined ritual remembrance, where the deity is invoked and honored in the very limbs and vital centers before further practice.
Ritual-technical practice linked to Vedāṅga application—precise mantra placement (nyāsa), phonetic elements like short vowels (hrasva), and ordered limb-mapping used in formal worship and mantra-sādhana.