俱舍論疏 13.181

13.181

論「自性善者至猶如良藥」，此釋第二自性善也。無慚、無愧有二義故，一唯是不善、二遍不善心。三不善根具其五義：一通五部、二遍六識、三是隨眠性、四斷善根時作牢強加行、五能發麁惡身語二業。由此五種是自性不善，作用力強，同餘心所由與此相應成相應不善。善翻此故，名自性善。既自性善以喻良藥，故不待餘成善性也。

The commentary states: "What is wholesome by intrinsic nature ... like good medicine." This explains the second, wholesome by intrinsic nature (svabhāva-kuśala). Shamelessness and non-dread have two meanings: first, they are solely unwholesome; second, they pervade unwholesome minds. The three unwholesome roots possess five meanings: first, they apply to all five categories [of abandonment]; second, they pervade the six consciousnesses; third, they are of the nature of anusayas; fourth, when severing the wholesome roots, they act with firm effort; fifth, they can initiate coarse and wicked bodily and vocal actions. Because these five are unwholesome by intrinsic nature, their operational power is strong; like other mental factors, they become unwholesome through association with these. Wholesomeness is the reverse of this, hence called wholesome by intrinsic nature. Since wholesome by intrinsic nature is compared to good medicine, it does not depend on anything else to establish its wholesome nature.