俱舍論疏 15.27

15.27

論「毘婆沙師至有得捨過」，敘《婆沙》釋也。《婆沙》反釋：若唯於能殺等境得律儀者，如此處羊是能殺境，上界天非是能殺境。於此生中，或有天作羊時應處得戒，羊作天時應捨於戒。非此得捨緣，如何得捨？《婆沙》一百一十七第二師釋，大同此論。

On the Śāstra's: "The Vaibhāṣikas... there would be the fault of obtaining and losing", this recounts the Vibhāṣā's explanation. The Vibhāṣā explains by reductio ad absurdum: if one only obtained discipline with respect to objects one is capable of killing, then a sheep here would be an object one is capable of killing, while a deity of a higher realm would not be an object one is capable of killing. In this life, when a deity becomes a sheep, one should obtain the precept on that spot; when a sheep becomes a deity, one should lose the precept. Since these are not conditions for obtaining or losing [precepts], how could there be obtaining and losing? The explanation of the second master in Vibhāṣā 117 is largely identical to this treatise.