法界次第初門 2.106

2.106

三、無覺無觀三昧。若以空、無相、無作相應心入諸定觀無覺無觀禪中，則從二禪乃至滅受想定一切定，觀諸無覺無觀皆悉正直，故名無覺無觀三昧也。

Third, the samādhi without vitarka and without vicāra. If, with a mind corresponding to emptiness, signlessness, and wishlessness, one enters all attainments and contemplates dhyānas without vitarka and without vicāra, then in all attainments from the second dhyāna up to the cessation of feeling and conceptualization, contemplating the states without vitarka and without vicāra, they all become completely upright; hence it is called the samādhi without vitarka and without vicāra.