瑜伽論記 4.337

4.337

更有一釋言：所依者色身也。無有苦及苦所依之處者，即是空處定也。無所有處無漏心地最為後邊者，此依明利斷惑。無漏非遊觀者，通有頂故。

There is also another explanation that says: "The support is the physical body. The place where there is neither suffering nor the support of suffering is precisely the concentration of the sphere of infinite space." Regarding "the taintless mental level of the sphere of nothingness is the utmost limit": this is based on its being clear and sharp in severing defilements. The taintless state that is not for leisurely contemplative roaming extends all the way to the peak of existence.