The dhāraṇī is thought to have originally been a recitation of names and attributes of Harihara (a composite form of the Hindu gods Vishnu and Shiva; Nīlakaṇṭha 'the blue-necked one' is a title of Shiva) said to have been recited by Avalokiteśvara, who was sometimes portrayed as introducing popular non-Buddhist deities (e.g. Hayagriva, Cundi) into the Buddhist pantheon by reciting their dhāraṇīs. Over time, these deities became considered to be the various forms or incarnations of Avalokiteśvara, who was described in texts such as the Lotus Sutra as manifesting himself in different forms according to the needs of different individuals; the dhāraṇī thus came to be considered as addressed to Avalokiteśvara as Nīlakaṇṭha, now understood to be a manifestation of the bodhisattva. From Nīlakaṇṭha Avalokiteśvara, this particular dhāraṇī eventually became associated with another of Avalokiteśvara's forms, namely the thousand-armed (sahasra-bhuja) one, and became attached to Buddhist texts concerning the thousand-armed Avalokiteśvara.