俱舍論記 29.46

29.46

「以於八中至各在邊故」者，答。一以勝故、二在邊故，偏名身證。又《婆沙》一百五十二云「有說淨解脫雖取淨相，而不起煩惱，以殊勝故，世尊安立身作證名。想受滅解脫，以無心故，在身非心。身力所起，非心力起，是故世尊說為身證（廣如彼說）。」又《正理》云「唯第三、八說身證者，舉二邊際類顯所餘。色解脫中淨為邊際，於諸無色滅定為邊。有說：第三初於身色以勝解力取清淨相，後漸遣除解脫成滿，緣身解脫此為究竟，故偏於此立身證名。滅定無心，唯依身住故，亦於彼立身證名，就勝故然。理實皆爾，依通有理。有契經言：何名身證？謂八解脫。（此八解脫諸門分別，廣如《婆沙》八十四解）。」

"Because among the eight... each is at the boundary": this is the answer. First, because they are superior; second, because they are at the boundary, they are singularly called 'realization through the body'. Furthermore, the Mahāvibhāṣā, fascicle 152, says: "Some say that although the pure deliverance grasps pure characteristics, it does not give rise to defilements; because it is extraordinary, the World-Honoured One designated it 'realization through the body'. The deliverance of the cessation of perception and feeling, being without mind, resides in the body, not in the mind. It is produced by the power of the body, not produced by the power of the mind; therefore the World-Honoured One called it realization through the body (fully explained as in that text)." Furthermore, the Nyāyānusāra says: "That only the third and eighth are called 'realization through the body' adduces the two boundaries to illustrate by category the remainder. Among the deliverances of form, the pure is the boundary; among the formless, the attainment of cessation is the boundary. Some say: the third initially, by the force of resolve, grasps pure characteristics in the physical form of the body, and subsequently, gradually casting them away, the deliverance is perfected; among the deliverances that cognize the body, this is the ultimate, and therefore the name 'realization through the body' is singularly established for it. The attainment of cessation is without mind, abiding only in reliance upon the body; therefore the name 'realization through the body' is also established for it, which is done on the basis of excellence. In reality, all are like this, and taking it generally is reasonable. There is a sutra that says: 'What is called realization through the body? It refers to the eight deliverances.' (The analysis of these eight deliverances through various doors is explained in detail as in the Mahāvibhāṣā, fascicle 84)."