俱舍論記 17.34

17.34

「如是說者至品類同故」者，此申正義。九品善根能發九品律儀，隨其所應於九品中，若彼律儀是此品善心所等起果，此品善心斷時即捨律儀，以果律儀與因善心品類同故。若加行善所發律儀，將斷善時加行位捨，以將斷善捨彼善故。斷善加行捨故，亦名斷善捨。故《正理》云「諸律儀果，有從加行、有從生得善心所生。若從加行善心生者，律儀先捨，後斷善根。然斷善根加行、根本皆名斷善，依此故說斷善根位捨諸律儀。若從生得善心生者，隨斷何品能生善根，所生律儀爾時便捨，捨能等起隨彼捨故。

Regarding "The correct doctrine says ... because the grades of the category are identical": This presents the correct doctrine. The nine grades of wholesome roots can generate nine grades of restraint. In accordance with what is appropriate among the nine grades, if that restraint is the fruit equally originated by this grade of wholesome mind, when this grade of wholesome mind is severed, the restraint is immediately abandoned, because the restraint as fruit and the wholesome mind as cause are of an identical category of grade. If restraint was generated by prepared wholesome [roots], it is abandoned at the preparatory stage when about to sever the wholesome, because when about to sever the wholesome, one abandons that wholesome. Because it is abandoned at the preparatory stage of severing the wholesome, it is also called abandonment upon severing the wholesome. Thus the Nyāyānusāra states: "The fruits of restraint are produced from either a prepared or an innate wholesome mind. If produced from a prepared wholesome mind, the restraint is abandoned first, and subsequently the wholesome roots are severed. However, both the preparatory and the fundamental stages of severing the wholesome roots are called severing the wholesome; relying on this, it is said that restraint is abandoned at the time of severing the wholesome roots. If produced from an innate wholesome mind, then in accordance with whichever grade of root capable of generating it is severed, the restraint produced is abandoned at that time, because when that which is capable of equal origination is abandoned, it is abandoned along with it."