俱舍論疏 23.35

23.35

論「動善根中至說名為頂」，釋頂名也。於中有二：一以退墮動善根中勝故名頂，如人頭頂。二以進退兩際名頂，猶如山首，故名為頂。《正理論》云「頂聲顯此是最勝處。如吉祥事至成辨時，世間說為此人至頂。動善中勝，故名為頂。」

[On] the treatise's: "Among the fluctuating roots of good... it is called Summit", this explains the name 'Summit'. Therein are two [meanings]: first, because it is supreme among fluctuating roots of good that can fall back, it is called a summit, like the crown of a person's head. Second, because it marks the two margins of advance and retreat, like a mountain peak, it is therefore called a summit. The Nyāyānusāra says: "The word 'summit' indicates that this is the most supreme point. Just as when an auspicious event reaches completion, worldly people say that this person has reached the summit; being supreme among fluctuating goods, it is therefore named Summit."