। ॥ १२२ ॥
In plain words
This 'unmanifest,' woven from the three guṇas, is called the Self's causal body. Its own distinct state is deep, dreamless sleep, where every function of the senses and the intellect has completely dissolved.
Close to the Sanskrit
This unmanifest, described by the three guṇas, is called the causal body of the Self. Deep sleep is its distinct state, [characterized by] the dissolution of all functions of the senses and intellect.