俱舍論記 4.66

4.66

「心平等性至說名為捨」者，令心平等性，從強說心，亦令心所。或心之平等性、無警覺性，如持秤縷，掉舉相違，說名為捨。故《入阿毘達摩論》云「心平等性說名為捨。捨背非理及向理故，由此勢力，令心於理及於非理，無向無背平等而住，如持秤縷。」又《正理》云「心平等性說名為捨，掉舉相違。如理所引，令心不越，是為捨義。」

Regarding "Equanimity of the mind ... is called equanimity (upekṣā)": Causing the equanimity of the mind—speaking of the mind based on its predominance, it also causes [equanimity of] mental factors. Alternatively, it is the equanimity of the mind, its state of non-alertness; like the cord holding a balance scale, it is opposed to restlessness (auddhatya), and is called equanimity. Therefore the *Abhidharmāvatāra* states: "Equanimity of the mind is called equanimity. Because it discards and turns away from what is unreasonable and faces toward what is reasonable, through this power, it causes the mind to abide in equanimity toward the reasonable and the unreasonable, neither facing toward nor turning away from them, like the cord holding a balance scale." Furthermore, the *Nyāyānusāra* states: "Equanimity of the mind is called equanimity; it is opposed to restlessness. Induced in accordance with principle, it causes the mind not to transgress; this is the meaning of equanimity."