俱舍論記 4.84

4.84

惛「謂惛沈至是名惛沈」者，引本論證。身、心重性，無堪任性、惛沈性，故名惛沈。惛謂惛昧，沈謂沈重義也。《正理論》云「輕安所治。」

On "Stupor (styāna) refers to 'heaviness of body and mind ... is called stupor'": This cites the fundamental treatise (*Jñānaprasthāna*) as proof. Heaviness of body and mind, absence of adaptability, and the nature of torpor—for this reason it is called stupor. 'Stupor' (*māndya*) means darkness and confusion; 'sinking' (*styāna*) means heavy. The *Nyāyānusāra* says: "It is that which is countered by pliancy (praśrabdhi)."