Cūḷa Suññata Sutta: The Infinity of Space

“Further, Ānanda, the monk—not attending to the perception of wilderness, not attending to the perception of earth—attends to the singleness based on the perception of the dimension of the infinity of space. His mind takes pleasure, finds satisfaction, settles, & indulges in its perception of the dimension of the infinity of space.

“He discerns that ‘Whatever disturbances that would exist based on the perception of wilderness are not present. Whatever disturbances that would exist based on the perception of earth are not present. There is only this modicum of disturbance: the singleness based on the perception of the dimension of the infinity of space.ʼ He discerns that ‘This mode of perception is empty of the perception of wilderness. This mode of perception is empty of the perception of earth. There is only this non-emptiness: the singleness based on the perception of the dimension of the infinity of space.ʼ Thus he regards it as empty of whatever is not there. Whatever remains, he discerns as present: ‘There is this.ʼ And so this, his entry into emptiness, accords with actuality, is undistorted in meaning, & pure.