俱舍論疏 4.67

4.67

論「心平等性至說名為捨」，《正理論》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。」述曰：心平等性即指其體。對治沈掉不平等性，故名平等。掉舉相違，舉所治也。掉行麁動，違捨義強，所以偏說。如理所引等者，釋捨義。謂捨是善性，是如理心引生，能調伏心令不越所作。此論「無警覺性」者，即是無掉舉也。

The Treatise states: "Equanimity of mind [...] is called equanimity (upekṣā)." The Nyāyānusāra states: "Equanimity of mind is called upekṣā. Being contrary to restlessness (auddhatya), and induced by proper manner, it causes the mind not to overstep; this is the meaning of equanimity." The Commentary explains: 'Equanimity of mind' points to its intrinsic nature. Counteracting the non-equanimity of depression and restlessness, it is therefore called equanimity. 'Being contrary to restlessness' presents what it counteracts. Restlessness has coarse and active conduct, strongly opposing the meaning of equanimity, which is why it is specifically mentioned. 'Induced by proper manner' and so forth explains the meaning of equanimity: equanimity is wholesome by nature, induced and produced by a mind acting in proper manner, capable of subduing the mind so that it does not exceed what is to be done. In this treatise, 'having no alerting nature' means having no restlessness.