Enlightenment (spiritual) yoga" and "karma yoga" are subsidiary. In bhakti yoga, practice centers on the worship God in any way and in any form, like Krishna or Ayyappa. Adi Shankara himself was a proponent of devotional worship or "Bhakti". But Adi Shankara taught that while Vedic sacrifices, "puja" and devotional worship can lead one in the direction of "jnana" (true knowledge), they cannot lead one directly to "moksha". At best, they can serve as means to obtain moksha via shukla gati. Karma yoga is the way of doing our duties, in disregard of personal gains or losses. According to Sri Swami Sivananda,
Bhakti movement concept of the Ultimate Reality as formless, without attributes or quality. "Saguna" Brahman, in contrast, was envisioned and developed as with form, attributes and quality. The two had parallels in the ancient pantheistic unmanifest and theistic manifest traditions, respectively, and traceable to Arjuna-Krishna dialogue in the Bhagavad Gita. It is the same Brahman, but viewed from two perspectives, one from "Nirguni" knowledge-focus and other from "Saguni" love-focus, united as Krishna in the Gita. "Nirguna" bhakta's poetry were "Jnana-shrayi", or had roots in knowledge. "Saguna" bhakta's poetry were "Prema-shrayi", or with roots in love. In Bhakti, the emphasis is reciprocal love