Muktikā

Muktikā (Sanskrit: मुक्तिका) refers to the Sanskrit-language anthology of a canon of 108 Upaniṣhads. The date of composition of each is unknown, with the oldest probably from about 800 BCE. The Principal Upanishads were composed in the 1st millennium BCE, most Yoga Upanishads composed probably from the 100 BCE to 300 CE period, and seven of the Sannyasa Upanishads composed before the 3rd century CE.

The canon is part of a dialogue between Rama and Hanuman dealing with the inquiry into mukti in the Muktikā Upanishad (108 in the list). The other collections of Upanishads include Oupanekhat, a Persian language anthology of 50 Upanishads; the Colebrooke Collection of 52 Upanishads, and the 52 Upanishad Collection of Nārāyana.

The canon

The canon is part of a dialogue between Rama and Hanuman. Rama proposes to teach Vedanta, saying "Even by reading one verse of them [any Upanishad] with devotion, one gets the status of union with me, which is hard to get even by sages." Hanuman inquires about the different kinds of "liberation" (or mukti, hence the name of the Upanishad), to which Rama answers, "The only real type [of liberation] is Kaivalya."

The list of 108 Upanishads is introduced in verses 26-29:

But by what means does one attain the Kaivalya kind of Moksha? The Mandukya [Upanishad] is enough; if knowledge is not attained from it, then study the Ten Upanishads. Attaining knowledge very quickly, you will reach my abode. If certainty is not attained even then, study the 32 Upanishads and stop. If desiring Moksha without the body, read the 108 Upanishads. Hear their order.