According to Osho, neither yoga nor bhakti is strictly necessary for pratyahar; inner withdrawal can arise through pure knowledge alone or pure devotion alone. Yet he advises going beyond the bare minimum: blend knowing, loving, singing, and dancing. Such abundance transforms a dry, calculated practice into living poetry, deepening pratyahar from mere effort into effortless inner flowering.
You don’t have to use both yoga and bhakti to turn inward; one true path works—but mixing love, understanding, and joy makes it easier and sweeter.