釋禪波羅蜜次第法門 6.96

6.96

第一、釋名，所以名空處定者，此定最初離三種色，心緣虛空，既與無色相應，故名虛空定。今此空處及上三無色定並是無覺、無觀、聖默然及捨俱所攝，故《摩訶衍》云：「得虛空處定，不苦不樂，其心轉增。」

First, explaining the name: the reason it is called the absorption of the station of space is that this absorption initially departs from three kinds of form and the mind takes empty space as its condition; since it corresponds with formlessness, it is called the absorption of empty space. Now, this station of space and the three formless absorptions above are all subsumed under the absence of vitarka, the absence of vicāra, noble silence, and equanimity; therefore the Mahāyāna[-upadeśa] states: 'Attaining the absorption of the station of empty space, neither suffering nor pleasant, one's mind intensifies further.'